#At file:///home/rl136806/mysql/repo/mysql-work0/ based on revid:tor.didriksen@strippedwjxy2y8
3379 Roy Lyseng 2011-06-08
Bug#12316645: Wrong cost calculation with optimizer_join_cache_level settings
best_access_path() did not take properly into account the setting of
optimizer_join_cache_level when calculating the access path that gives
the smallest cost to access a given table.
There are three changes applied in this bug fix:
- best_access_path() properly accounts for join cache level 0, ie
do not use join caching.
- best_access_path() does account for join cache level greater than 2
when a table is outer-joined to the current join prefix.
- best_access_path() does account for join cache level greater than 2
when a table is semi-joined to the current join prefix.
Static properties for setting join buffering have been centralized to
a new function set_join_buffer_properties().
Further on, setting of join cache level is changed.
check_join_cache_usage() is renamed to setup_join_buffering().
Cost calculation for joins with join buffering is better than it used
to be, but it is still not fair. Sometimes, cost is calculated using
join buffering, but the decision has to be reverted later.
Cost calculation for BKA join strategy is also not considered properly
(but this patch does not change the cost calculations for BKA).
mysql-test/t/join_cache_jcl0.test
Added test cases for joins where join buffering is turned off.
mysql-test/r/join_cache_jcl0.result
Added test case results for joins where join buffering is turned off.
mysql-test/r/count_distinct.result
mysql-test/r/distinct.result
mysql-test/r/group_by.result
mysql-test/r/join_cache_jcl1.result
mysql-test/r/join_cache_jcl2.result
mysql-test/r/join_cache_jcl3.result
mysql-test/r/join_cache_jcl4.result
mysql-test/r/join_cache_jcl5.result
mysql-test/r/join_cache_jcl6.result
mysql-test/r/join_cache_jcl7.result
mysql-test/r/join_cache_jcl8.result
mysql-test/r/join_nested.result
mysql-test/r/join_nested_jcl6.result
mysql-test/r/join_outer.result
mysql-test/r/join_outer_jcl6.result
mysql-test/r/null_key_all.result
mysql-test/r/null_key_icp.result
mysql-test/r/null_key_none.result
mysql-test/r/order_by_all.result
mysql-test/r/order_by_icp_mrr.result
mysql-test/r/order_by_none.result
mysql-test/r/select_all.result
mysql-test/r/select_all_jcl6.result
mysql-test/r/select_icp_mrr.result
mysql-test/r/select_icp_mrr_jcl6.result
mysql-test/r/select_none.result
mysql-test/r/select_none_jcl6.result
mysql-test/r/subquery_sj_all.result
mysql-test/r/subquery_sj_all_jcl6.result
mysql-test/r/subquery_sj_all_jcl7.result
mysql-test/r/subquery_sj_firstmatch.result
mysql-test/r/subquery_sj_firstmatch_jcl6.result
mysql-test/r/subquery_sj_firstmatch_jcl7.result
mysql-test/r/subquery_sj_mat.result
mysql-test/r/subquery_sj_mat_jcl6.result
mysql-test/r/subquery_sj_mat_jcl7.result
mysql-test/r/subselect_innodb.result
Lots of changed plans for bug#12316645.
Generally the new costing will benefit BNL join buffering, sometimes
over ref access.
count_distinct.result: Changed result because of non-deterministic query.
sql/sql_select.cc
Modified the argument disable_jbuf locally in best_access_path()
according to join cache level setting, and whether the table to be
added is outer-joined or semi-joined.
Added function set_join_buffer_properties() that calculates whether
join buffering can be used for the tables of a query.
check_join_cache_usage() is renamed to setup_join_buffering().
Checks for join buffering have been refactored somewhat:
- Attempted to group the tests better (general checks before
outer join tests before semi-join tests).
- Outer join test is simplified: The criterion is that if one table
in an outer join operation cannot use join buffering, then all
tables in that outer join nest and any inner outer join nest
cannot use join buffering. This is handled in two tests:
1. If the first inner table of the current outer join nest does
not use join buffering, this table cannot use it either.
2. If an immediate outer join nest does not use join buffering,
this table cannot use join buffering.
The initial join buffering strategy is now selected in
greedy_search() and possibly modified in setup_join_buffering().
If join buffering is to be used, setup_join_buffering() will
set up the join cache for the table.
best_extension_by_limited_search(): Variable 's' made const
throughout it's use.
sql/sql_select.h
Added more documentation to the field use_join_cache in JOIN_TAB.
The value is set to the set of possible join buffering strategies
for this table when starting the join optimization.
added:
mysql-test/r/join_cache_jcl0.result
mysql-test/t/join_cache_jcl0.test
modified:
mysql-test/include/join_cache.inc
mysql-test/r/count_distinct.result
mysql-test/r/distinct.result
mysql-test/r/group_by.result
mysql-test/r/join_cache_jcl1.result
mysql-test/r/join_cache_jcl2.result
mysql-test/r/join_cache_jcl3.result
mysql-test/r/join_cache_jcl4.result
mysql-test/r/join_cache_jcl5.result
mysql-test/r/join_cache_jcl6.result
mysql-test/r/join_cache_jcl7.result
mysql-test/r/join_cache_jcl8.result
mysql-test/r/join_nested.result
mysql-test/r/join_nested_jcl6.result
mysql-test/r/join_outer.result
mysql-test/r/join_outer_jcl6.result
mysql-test/r/null_key_all.result
mysql-test/r/null_key_icp.result
mysql-test/r/null_key_none.result
mysql-test/r/order_by_all.result
mysql-test/r/order_by_icp_mrr.result
mysql-test/r/order_by_none.result
mysql-test/r/select_all.result
mysql-test/r/select_all_jcl6.result
mysql-test/r/select_icp_mrr.result
mysql-test/r/select_icp_mrr_jcl6.result
mysql-test/r/select_none.result
mysql-test/r/select_none_jcl6.result
mysql-test/r/subquery_sj_all.result
mysql-test/r/subquery_sj_all_jcl6.result
mysql-test/r/subquery_sj_all_jcl7.result
mysql-test/r/subquery_sj_firstmatch.result
mysql-test/r/subquery_sj_firstmatch_jcl6.result
mysql-test/r/subquery_sj_firstmatch_jcl7.result
mysql-test/r/subquery_sj_mat.result
mysql-test/r/subquery_sj_mat_jcl6.result
mysql-test/r/subquery_sj_mat_jcl7.result
mysql-test/r/subselect_innodb.result
sql/sql_select.cc
sql/sql_select.h
=== modified file 'mysql-test/include/join_cache.inc'
--- a/mysql-test/include/join_cache.inc 2011-04-26 08:49:10 +0000
+++ b/mysql-test/include/join_cache.inc 2011-06-08 13:24:56 +0000
@@ -516,7 +516,6 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
---echo The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
=== modified file 'mysql-test/r/count_distinct.result'
--- a/mysql-test/r/count_distinct.result 2010-04-13 09:38:28 +0000
+++ b/mysql-test/r/count_distinct.result 2011-06-08 13:24:56 +0000
@@ -49,7 +49,7 @@ isbn city @bar:=t1.libname a
000 New York New York Public Libra 2
SELECT @bar;
@bar
-Berkeley Public2
+NYC Lib
select t2.isbn,city,concat(@bar:=t1.libname),count(distinct t1.libname) as a
from t3 left join t1 on t3.libname=t1.libname left join t2
on t3.isbn=t2.isbn group by city having count(distinct
@@ -59,7 +59,7 @@ isbn city concat(@bar:=t1.libname) a
000 New York New York Public Libra 2
SELECT @bar;
@bar
-Berkeley Public2
+NYC Lib
drop table t1, t2, t3;
create table t1 (f1 int);
insert into t1 values (1);
=== modified file 'mysql-test/r/distinct.result'
--- a/mysql-test/r/distinct.result 2011-05-11 12:32:23 +0000
+++ b/mysql-test/r/distinct.result 2011-06-08 13:24:56 +0000
@@ -303,9 +303,9 @@ id select_type table type possible_keys
1 SIMPLE t2 index id id 8 NULL 1 Using index; Distinct; Using join buffer (BNL, incremental buffers)
1 SIMPLE t3 index id id 8 NULL 1 Using index; Distinct; Using join buffer (BNL, incremental buffers)
1 SIMPLE j_lj_t2 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t2_lj ref id id 4 test.j_lj_t2.id 1 Using where; Using index; Distinct
+1 SIMPLE t2_lj index id id 8 NULL 1 Using where; Using index; Distinct; Using join buffer (BNL, incremental buffers)
1 SIMPLE j_lj_t3 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t3_lj ref id id 4 test.j_lj_t3.id 1 Using where; Using index; Distinct
+1 SIMPLE t3_lj index id id 8 NULL 1 Using where; Using index; Distinct; Using join buffer (BNL, incremental buffers)
SELECT DISTINCT
t1.id
from
=== modified file 'mysql-test/r/group_by.result'
--- a/mysql-test/r/group_by.result 2011-05-26 09:22:35 +0000
+++ b/mysql-test/r/group_by.result 2011-06-08 13:24:56 +0000
@@ -496,8 +496,8 @@ c1.id AND c1.active = 'Yes' LEFT JOIN t3
c2.active = 'Yes' WHERE m.pid=1 AND (c1.id IS NOT NULL OR c2.id IS NOT NULL);
pid c1id c2id value id active id active
1 1 NULL 1 1 Yes NULL NULL
-1 NULL 3 3 NULL NULL 3 Yes
1 4 NULL 4 4 Yes NULL NULL
+1 NULL 3 3 NULL NULL 3 Yes
select max(value) from t1 AS m LEFT JOIN t2 AS c1 ON
m.c1id = c1.id AND c1.active = 'Yes' LEFT JOIN t3 AS c2 ON m.c2id =
c2.id AND c2.active = 'Yes' WHERE m.pid=1 AND (c1.id IS NOT NULL OR c2.id IS
=== added file 'mysql-test/r/join_cache_jcl0.result'
--- a/mysql-test/r/join_cache_jcl0.result 1970-01-01 00:00:00 +0000
+++ b/mysql-test/r/join_cache_jcl0.result 2011-06-08 13:24:56 +0000
@@ -0,0 +1,2308 @@
+set optimizer_join_cache_level = 0;;
+set optimizer_switch='mrr_cost_based=off';
+DROP TABLE IF EXISTS t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11;
+DROP DATABASE IF EXISTS world;
+set names utf8;
+CREATE DATABASE world;
+use world;
+CREATE TABLE Country (
+Code char(3) NOT NULL default '',
+Name char(52) NOT NULL default '',
+SurfaceArea float(10,2) NOT NULL default '0.00',
+Population int(11) NOT NULL default '0',
+Capital int(11) default NULL
+);
+CREATE TABLE City (
+ID int(11) NOT NULL,
+Name char(35) NOT NULL default '',
+Country char(3) NOT NULL default '',
+Population int(11) NOT NULL default '0'
+);
+CREATE TABLE CountryLanguage (
+Country char(3) NOT NULL default '',
+Language char(30) NOT NULL default '',
+Percentage float(3,1) NOT NULL default '0.0'
+);
+SELECT COUNT(*) FROM Country;
+COUNT(*)
+239
+SELECT COUNT(*) FROM City;
+COUNT(*)
+4079
+SELECT COUNT(*) FROM CountryLanguage;
+COUNT(*)
+984
+show variables like 'join_buffer_size';
+Variable_name Value
+join_buffer_size 131072
+show variables like 'optimizer_join_cache_level';
+Variable_name Value
+optimizer_join_cache_level 0
+EXPLAIN
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
+1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name
+?iauliai Lithuania
+Beirut Lebanon
+Bengasi Libyan Arab Jamahiriya
+Daugavpils Latvia
+Kaunas Lithuania
+Klaipeda Lithuania
+Maseru Lesotho
+Misrata Libyan Arab Jamahiriya
+Monrovia Liberia
+Panevezys Lithuania
+Riga Latvia
+Tripoli Lebanon
+Tripoli Libyan Arab Jamahiriya
+Vientiane Laos
+Vilnius Lithuania
+EXPLAIN
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
+1 SIMPLE CountryLanguage ALL NULL NULL NULL NULL 984 Using where
+1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+Name Name Language
+La Ceiba Honduras Spanish
+La Habana Cuba Spanish
+La Matanza Argentina Spanish
+La Paz Bolivia Spanish
+La Paz Mexico Spanish
+La Paz Mexico Spanish
+La Plata Argentina Spanish
+La Rioja Argentina Spanish
+La Romana Dominican Republic Spanish
+La Serena Chile Spanish
+La Spezia Italy Italian
+Lafayette United States English
+Lages Brazil Portuguese
+Lagos de Moreno Mexico Spanish
+Lahti Finland Finnish
+Laiwu China Chinese
+Laiyang China Chinese
+Laizhou China Chinese
+Lakewood United States English
+Lalitapur Nepal Nepali
+Lambaré Paraguay Spanish
+Lancaster United States English
+Langfang China Chinese
+Lansing United States English
+Lanzhou China Chinese
+Lanús Argentina Spanish
+Laohekou China Chinese
+Laredo United States English
+Larisa Greece Greek
+Las Heras Argentina Spanish
+Las Margaritas Mexico Spanish
+Las Palmas de Gran Canaria Spain Spanish
+Las Vegas United States English
+Lashio (Lasho) Myanmar Burmese
+Latakia Syria Arabic
+Latina Italy Italian
+Lauro de Freitas Brazil Portuguese
+Lausanne Switzerland German
+Laval Canada English
+Le Havre France French
+Le Mans France French
+Le-Cap-Haïtien Haiti Haiti Creole
+Lecce Italy Italian
+Leeds United Kingdom English
+Leganés Spain Spanish
+Legnica Poland Polish
+Leicester United Kingdom English
+Leiden Netherlands Dutch
+Leipzig Germany German
+Leiyang China Chinese
+Lengshuijiang China Chinese
+Leninsk-Kuznetski Russian Federation Russian
+Lerdo Mexico Spanish
+Lerma Mexico Spanish
+Leshan China Chinese
+Leverkusen Germany German
+Lexington-Fayette United States English
+León Mexico Spanish
+León Nicaragua Spanish
+León Spain Spanish
+Lhasa China Chinese
+Liangcheng China Chinese
+Lianyuan China Chinese
+Lianyungang China Chinese
+Liaocheng China Chinese
+Liaoyang China Chinese
+Liaoyuan China Chinese
+Liberec Czech Republic Czech
+Lida Belarus Belorussian
+Liling China Chinese
+Lille France French
+Lilongwe Malawi Chichewa
+Lima Peru Spanish
+Limeira Brazil Portuguese
+Limoges France French
+Linchuan China Chinese
+Lincoln United States English
+Linfen China Chinese
+Linhai China Chinese
+Linhares Brazil Portuguese
+Linhe China Chinese
+Linköping Sweden Swedish
+Linqing China Chinese
+Linyi China Chinese
+Linz Austria German
+Lipetsk Russian Federation Russian
+Lisboa Portugal Portuguese
+Little Rock United States English
+Liupanshui China Chinese
+Liuzhou China Chinese
+Liu´an China Chinese
+Liverpool United Kingdom English
+Livonia United States English
+Livorno Italy Italian
+Liyang China Chinese
+Liège Belgium Dutch
+Ljubertsy Russian Federation Russian
+Lleida (Lérida) Spain Spanish
+Logroño Spain Spanish
+Loja Ecuador Spanish
+Lomas de Zamora Argentina Spanish
+London Canada English
+London United Kingdom English
+Londrina Brazil Portuguese
+Long Beach United States English
+Long Xuyen Vietnam Vietnamese
+Longjing China Chinese
+Longkou China Chinese
+Longueuil Canada English
+Longyan China Chinese
+Los Angeles Chile Spanish
+Los Angeles United States English
+Los Cabos Mexico Spanish
+Los Teques Venezuela Spanish
+Loudi China Chinese
+Louisville United States English
+Lowell United States English
+Lower Hutt New Zealand English
+Lubbock United States English
+Lublin Poland Polish
+Luchou Taiwan Min
+Ludwigshafen am Rhein Germany German
+Lugansk Ukraine Ukrainian
+Lund Sweden Swedish
+Lungtan Taiwan Min
+Luohe China Chinese
+Luoyang China Chinese
+Luton United Kingdom English
+Lutsk Ukraine Ukrainian
+Luxor Egypt Arabic
+Luzhou China Chinese
+Luziânia Brazil Portuguese
+Lviv Ukraine Ukrainian
+Lyon France French
+Lysyt?ansk Ukraine Ukrainian
+L´Hospitalet de Llobregat Spain Spanish
+Lázaro Cárdenas Mexico Spanish
+Lódz Poland Polish
+Lübeck Germany German
+Lünen Germany German
+set join_buffer_size=256;
+show variables like 'join_buffer_size';
+Variable_name Value
+join_buffer_size 256
+EXPLAIN
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
+1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name
+?iauliai Lithuania
+Beirut Lebanon
+Bengasi Libyan Arab Jamahiriya
+Daugavpils Latvia
+Kaunas Lithuania
+Klaipeda Lithuania
+Maseru Lesotho
+Misrata Libyan Arab Jamahiriya
+Monrovia Liberia
+Panevezys Lithuania
+Riga Latvia
+Tripoli Lebanon
+Tripoli Libyan Arab Jamahiriya
+Vientiane Laos
+Vilnius Lithuania
+EXPLAIN
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
+1 SIMPLE CountryLanguage ALL NULL NULL NULL NULL 984 Using where
+1 SIMPLE City ALL NULL NULL NULL NULL 4079 Using where
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+Name Name Language
+La Ceiba Honduras Spanish
+La Habana Cuba Spanish
+La Matanza Argentina Spanish
+La Paz Bolivia Spanish
+La Paz Mexico Spanish
+La Paz Mexico Spanish
+La Plata Argentina Spanish
+La Rioja Argentina Spanish
+La Romana Dominican Republic Spanish
+La Serena Chile Spanish
+La Spezia Italy Italian
+Lafayette United States English
+Lages Brazil Portuguese
+Lagos de Moreno Mexico Spanish
+Lahti Finland Finnish
+Laiwu China Chinese
+Laiyang China Chinese
+Laizhou China Chinese
+Lakewood United States English
+Lalitapur Nepal Nepali
+Lambaré Paraguay Spanish
+Lancaster United States English
+Langfang China Chinese
+Lansing United States English
+Lanzhou China Chinese
+Lanús Argentina Spanish
+Laohekou China Chinese
+Laredo United States English
+Larisa Greece Greek
+Las Heras Argentina Spanish
+Las Margaritas Mexico Spanish
+Las Palmas de Gran Canaria Spain Spanish
+Las Vegas United States English
+Lashio (Lasho) Myanmar Burmese
+Latakia Syria Arabic
+Latina Italy Italian
+Lauro de Freitas Brazil Portuguese
+Lausanne Switzerland German
+Laval Canada English
+Le Havre France French
+Le Mans France French
+Le-Cap-Haïtien Haiti Haiti Creole
+Lecce Italy Italian
+Leeds United Kingdom English
+Leganés Spain Spanish
+Legnica Poland Polish
+Leicester United Kingdom English
+Leiden Netherlands Dutch
+Leipzig Germany German
+Leiyang China Chinese
+Lengshuijiang China Chinese
+Leninsk-Kuznetski Russian Federation Russian
+Lerdo Mexico Spanish
+Lerma Mexico Spanish
+Leshan China Chinese
+Leverkusen Germany German
+Lexington-Fayette United States English
+León Mexico Spanish
+Leinese
+Liangcheng China Chinese
+Lianyuan China Chinese
+Lianyungang China Chinese
+Liaocheng China Chinese
+Liaoyang China Chinese
+Liaoyuan China Chinese
+Liberec Czech Republic Czech
+Lida Belarus Belorussian
+Liling China Chinese
+Lille France French
+Lilongwe Malawi Chichewa
+Lima Peru Spanish
+Limeira Brazil Portuguese
+Limoges France French
+Linchuan China Chinese
+Lincoln United States English
+Linfen China Chinese
+Linhai China Chinese
+Linhares Brazil Portuguese
+Linhe China Chinese
+Linköping Sweden Swedish
+Linqing China Chinese
+Linyi China Chinese
+Linz Austria German
+Lipetsk Russian Federation Russian
+Lisboa Portugal Portuguese
+Little Rock United States English
+Liupanshui China Chinese
+Liuzhou China Chinese
+Liu´an China Chinese
+Liverpool United Kingdom English
+Livonia United States English
+Livorno Italy Italian
+Liyang China Chinese
+Liège Belgium Dutch
+Ljubertsy Russian Federation Russian
+Lleida (Lérida) Spain Spanish
+Logroño Spain Spanish
+Loja Ecuador Spanish
+Lomas de Zamora Argentina Spanish
+London Canada English
+London United Kingdom English
+Londrina Brazil Portuguese
+Long Beach United States English
+Long Xuyen Vietnam Vietnamese
+Longjing China Chinese
+Longkou China Chinese
+Longueuil Canada English
+Longyan China Chinese
+Los Angeles Chile Spanish
+Los Angeles United States English
+Los Cabos Mexico Spanish
+Los Teques Venezuela Spanish
+Loudi China Chinese
+Louisville United States English
+Lowell United States English
+Lower Hutt New Zealand English
+Lubbock United States English
+Lublin Poland Polish
+Luchou Taiwan Min
+Ludwigshafen am Rhein Germany German
+Lugansk Ukraine Ukrainian
+Lund Sweden Swedish
+Lungtan Taiwan Min
+Luohe China Chinese
+Luoyang China Chinese
+Luton United Kingdom English
+Lutsk Ukraine Ukrainian
+Luxor Egypt Arabic
+Luzhou China Chinese
+Luziânia Brazil Portuguese
+Lviv Ukraine Ukrainian
+Lyon France French
+Lysyt?ansk Ukraine Ukrainian
+L´Hospitalet de Llobregat Spain Spanish
+Lázaro Cárdenas Mexico Spanish
+Lódz Poland Polish
+Lübeck Germany German
+Lünen Germany German
+set join_buffer_size=default;
+show variables like 'join_buffer_size';
+Variable_name Value
+join_buffer_size 131072
+DROP DATABASE world;
+CREATE DATABASE world;
+use world;
+CREATE TABLE Country (
+Code char(3) NOT NULL default '',
+Name char(52) NOT NULL default '',
+SurfaceArea float(10,2) NOT NULL default '0.00',
+Population int(11) NOT NULL default '0',
+Capital int(11) default NULL,
+PRIMARY KEY (Code),
+UNIQUE INDEX (Name)
+);
+CREATE TABLE City (
+ID int(11) NOT NULL auto_increment,
+Name char(35) NOT NULL default '',
+Country char(3) NOT NULL default '',
+Population int(11) NOT NULL default '0',
+PRIMARY KEY (ID),
+INDEX (Population),
+INDEX (Country)
+);
+CREATE TABLE CountryLanguage (
+Country char(3) NOT NULL default '',
+Language char(30) NOT NULL default '',
+Percentage float(3,1) NOT NULL default '0.0',
+PRIMARY KEY (Country, Language),
+INDEX (Percentage)
+);
+show variables like 'join_buffer_size';
+Variable_name Value
+join_buffer_size 131072
+EXPLAIN
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
+1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name
+?iauliai Lithuania
+Beirut Lebanon
+Bengasi Libyan Arab Jamahiriya
+Daugavpils Latvia
+Kaunas Lithuania
+Klaipeda Lithuania
+Maseru Lesotho
+Misrata Libyan Arab Jamahiriya
+Monrovia Liberia
+Panevezys Lithuania
+Riga Latvia
+Tripoli Lebanon
+Tripoli Libyan Arab Jamahiriya
+Vientiane Laos
+Vilnius Lithuania
+EXPLAIN
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
+1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where
+1 SIMPLE City ref Country Country 3 world.Country.Code 18 Using index condition; Using where
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+Name Name Language
+La Ceiba Honduras Spanish
+La Habana Cuba Spanish
+La Matanza Argentina Spanish
+La Paz Bolivia Spanish
+La Paz Mexico Spanish
+La Paz Mexico Spanish
+La Plata Argentina Spanish
+La Rioja Argentina Spanish
+La Romana Dominican Republic Spanish
+La Serena Chile Spanish
+La Spezia Italy Italian
+Lafayette United States English
+Lages Brazil Portuguese
+Lagos de Moreno Mexico Spanish
+Lahti Finland Finnish
+Laiwu China Chinese
+Laiyang China Chinese
+Laizhou China Chinese
+Lakewood United States English
+Lalitapur Nepal Nepali
+Lambaré Paraguay Spanish
+Lancaster United States English
+Langfang China Chinese
+Lansing United States English
+Lanzhou China Chinese
+Lanús Argentina Spanish
+Laohekou China Chinese
+Laredo United States English
+Larisa Greece Greek
+Las Heras Argentina Spanish
+Las Margaritas Mexico Spanish
+Las Palmas de Gran Canaria Spain Spanish
+Las Vegas United States English
+Lashio (Lasho) Myanmar Burmese
+Latakia Syria Arabic
+Latina Italy Italian
+Lauro de Freitas Brazil Portuguese
+Lausanne Switzerland German
+Laval Canada English
+Le Havre France French
+Le Mans France French
+Le-Cap-Haïtien Haiti Haiti Creole
+Lecce Italy Italian
+Leeds United Kingdom English
+Leganés Spain Spanish
+Legnica Poland Polish
+Leicester United Kingdom English
+Leiden Netherlands Dutch
+Leipzig Germany German
+Leiyang China Chinese
+Lengshuijiang China Chinese
+Leninsk-Kuznetski Russian Federation Russian
+Lerdo Mexico Spanish
+Lerma Mexico Spanish
+Leshan China Chinese
+Leverkusen Germany German
+Lexington-Fayette United States English
+León Mexico Spanish
+León Nicaragua Spanish
+León Spain Spanish
+Lhasa China Chinese
+Liangcheng China Chinese
+Lianyuan China Chinese
+Lianyungang China Chinese
+Liaocheng China Chinese
+Liaoyang China Chinese
+Liaoyuan China Chinese
+Liberec Czech Republic Czech
+Lida Belarus Belorussian
+Liling China Chinese
+Lille France French
+Lilongwe Malawi Chichewa
+Lima Peru Spanish
+Limeira Brazil Portuguese
+Limoges France French
+Linchuan China Chinese
+Lincoln United States English
+Linfen China Chinese
+Linhai China Chinese
+Linhares Brazil Portuguese
+Linhe China Chinese
+Linköping Sweden Swedish
+Linqing China Chinese
+Linyi China Chinese
+Linz Austria German
+Lipetsk Russian Federation Russian
+Lisboa Portugal Portuguese
+Little Rock United States English
+Liupanshui China Chinese
+Liuzhou China Chinese
+Liu´an China Chinese
+Liverpool United Kingdom English
+Livonia United States English
+Livorno Italy Italian
+Liyang China Chinese
+Liège Belgium Dutch
+Ljubertsy Russian Federation Russian
+Lleida (Lérida) Spain Spanish
+Logroño Spain Spanish
+Loja Ecuador Spanish
+Lomas de Zamora Argentina Spanish
+London Canada English
+London United Kingdom English
+Londrina Brazil Portuguese
+Long Beach United States English
+Long Xuyen Vietnam Vietnamese
+Longjing China Chinese
+Longkou China Chinese
+Longueuil Canada English
+Longyan China Chinese
+Los Angeles Chile Spanish
+Los Angeles United States English
+Los Cabos Mexico Spanish
+Los Teques Venezuela Spanish
+Loudi China Chinese
+Louisville United States English
+Lowell United States English
+Lower Hutt New Zealand English
+Lubbock United States English
+Lublin Poland Polish
+Luchou Taiwan Min
+Ludwigshafen am Rhein Germany German
+Lugansk Ukraine Ukrainian
+Lund Sweden Swedish
+Lungtan Taiwan Min
+Luohe China Chinese
+Luoyang China Chinese
+Luton United Kingdom English
+Lutsk Ukraine Ukrainian
+Luxor Egypt Arabic
+Luzhou China Chinese
+Luziânia Brazil Portuguese
+Lviv Ukraine Ukrainian
+Lyon France French
+Lysyt?ansk Ukraine Ukrainian
+L´Hospitalet de Llobregat Spain Spanish
+Lázaro Cárdenas Mexico Spanish
+Lódz Poland Polish
+Lübeck Germany German
+Lünen Germany German
+EXPLAIN
+SELECT Name FROM City
+WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
+City.Population > 100000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
+1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where
+SELECT Name FROM City
+WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
+City.Population > 100000;
+Name
+?iauliai
+Beirut
+Bengasi
+Daugavpils
+Kaunas
+Klaipeda
+Maseru
+Misrata
+Monrovia
+Panevezys
+Riga
+Tripoli
+Tripoli
+Vientiane
+Vilnius
+EXPLAIN
+SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage)
+FROM Country LEFT JOIN CountryLanguage ON
+(CountryLanguage.Country=Country.Code AND Language='English')
+WHERE
+Country.Population > 10000000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where
+1 SIMPLE CountryLanguage eq_ref PRIMARY PRIMARY 33 world.Country.Code,const 1 Using where
+SELECT Country.Name, IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage)
+FROM Country LEFT JOIN CountryLanguage ON
+(CountryLanguage.Country=Country.Code AND Language='English')
+WHERE
+Country.Population > 10000000;
+Name IF(ISNULL(CountryLanguage.Country), NULL, CountryLanguage.Percentage)
+Afghanistan NULL
+Algeria NULL
+Angola NULL
+Argentina NULL
+Australia 81.2
+Bangladesh NULL
+Belarus NULL
+Belgium NULL
+Brazil NULL
+Burkina Faso NULL
+Cambodia NULL
+Cameroon NULL
+Canada 60.4
+Chile NULL
+China NULL
+Colombia NULL
+Congo, The Democratic Republic of the NULL
+Cuba NULL
+Czech Republic NULL
+Côte d?Ivoire NULL
+Ecuador NULL
+Egypt NULL
+Ethiopia NULL
+France NULL
+Germany NULL
+Ghana NULL
+Greece NULL
+Guatemala NULL
+Hungary NULL
+India NULL
+Indonesia NULL
+Iran NULL
+Iraq NULL
+Italy NULL
+Japan 0.1
+Kazakstan NULL
+Kenya NULL
+Madagascar NULL
+Malawi NULL
+Malaysia 1.6
+Mali NULL
+Mexico NULL
+Morocco NULL
+Mozambique NULL
+Myanmar NULL
+Nepal NULL
+Netherlands NULL
+Niger NULL
+Nigeria NULL
+North Korea NULL
+Pakistan NULL
+Peru NULL
+Philippines NULL
+Poland NULL
+Romania NULL
+Russian Federation NULL
+Saudi Arabia NULL
+Somalia NULL
+South Africa 8.5
+South Korea NULL
+Spain NULL
+Sri Lanka NULL
+Sudan NULL
+Syria NULL
+Taiwan NULL
+Tanzania NULL
+Thailand NULL
+Turkey NULL
+Uganda NULL
+Ukraine NULL
+United Kingdom 97.3
+United States 86.2
+Uzbekistan NULL
+Venezuela NULL
+Vietnam NULL
+Yemen NULL
+Yugoslavia NULL
+Zimbabwe 2.2
+set join_buffer_size=256;
+show variables like 'join_buffer_size';
+Variable_name Value
+join_buffer_size 256
+EXPLAIN
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
+1 SIMPLE City ref Population,Country Country 3 world.Country.Code 18 Using where
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name
+?iauliai Lithuania
+Beirut Lebanon
+Bengasi Libyan Arab Jamahiriya
+Daugavpils Latvia
+Kaunas Lithuania
+Klaipeda Lithuania
+Maseru Lesotho
+Misrata Libyan Arab Jamahiriya
+Monrovia Liberia
+Panevezys Lithuania
+Riga Latvia
+Tripoli Lebanon
+Tripoli Libyan Arab Jamahiriya
+Vientiane Laos
+Vilnius Lithuania
+EXPLAIN
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE CountryLanguage ALL PRIMARY,Percentage NULL NULL NULL 984 Using where
+1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.CountryLanguage.Country 1 Using where
+1 SIMPLE City ref Country Country 3 world.Country.Code 18 Using index condition; Using where
+SELECT City.Name, Country.Name, CountryLanguage.Language
+FROM City,Country,CountryLanguage
+WHERE City.Country=Country.Code AND
+CountryLanguage.Country=Country.Code AND
+City.Name LIKE 'L%' AND Country.Population > 3000000 AND
+CountryLanguage.Percentage > 50;
+Name Name Language
+La Ceiba Honduras Spanish
+La Habana Cuba Spanish
+La Matanza Argentina Spanish
+La Paz Bolivia Spanish
+La Paz Mexico Spanish
+La Paz Mexico Spanish
+La Plata Argentina Spanish
+La Rioja Argentina Spanish
+La Romana Dominican Republic Spanish
+La Serena Chile Spanish
+La Spezia Italy Italian
+Lafayette United States English
+Lages Brazil Portuguese
+Lagos de Moreno Mexico Spanish
+Lahti Finland Finnish
+Laiwu China Chinese
+Laiyang China Chinese
+Laizhou China Chinese
+Lakewood United States English
+Lalitapur Nepal Nepali
+Lambaré Paraguay Spanish
+Lancaster United States English
+Langfang China Chinese
+Lansing United States English
+Lanzhou China Chinese
+Lanús Argentina Spanish
+Laohekou China Chinese
+Laredo United States English
+Larisa Greece Greek
+Las Heras Argentina Spanish
+Las Margaritas Mexico Spanish
+Las Palmas de Gran Canaria Spain Spanish
+Las Vegas United States English
+Lashio (Lasho) Myanmar Burmese
+Latakia Syria Arabic
+Latina Italy Italian
+Lauro de Freitas Brazil Portuguese
+Lausanne Switzerland German
+Laval Canada English
+Le Havre France French
+Le Mans France French
+Le-Cap-Haïtien Haiti Haiti Creole
+Lecce Italy Italian
+Leeds United Kingdom English
+Leganés Spain Spanish
+Legnica Poland Polish
+Leicester United Kingdom English
+Leiden Netherlands Dutch
+Leipzig Germany German
+Leiyang China Chinese
+Lengshuijiang China Chinese
+Leninsk-Kuznetski Russian Federation Russian
+Lerdo Mexico Spanish
+Lerma Mexico Spanish
+Leshan China Chinese
+Leverkusen Germany German
+Lexington-Fayette United States English
+León Mexico Spanish
+León Nicaragua Spanish
+León Spain Spanish
+Lhasa China Chinese
+Liangcheng China Chinese
+Lianyuan China Chinese
+Lianyungang China Chinese
+Liaocheng China Chinese
+Liaoyang China Chinese
+Liaoyuan China Chinese
+Liberec Czech Republic Czech
+Lida Belarus Belorussian
+Liling China Chinese
+Lille France French
+Lilongwe Malawi Chichewa
+Lima Peru Spanish
+Limeira Brazil Portuguese
+Limoges France French
+Linchuan China Chinese
+Lincoln United States English
+Linfen China Chinese
+Linhai China Chinese
+Linhares Brazil Portuguese
+Linhe China Chinese
+Linköping Sweden Swedish
+Linqing China Chinese
+Linyi China Chinese
+Linz Austria German
+Lipetsk Russian Federation Russian
+Lisboa Portugal Portuguese
+Little Rock United States English
+Liupanshui China Chinese
+Liuzhou China Chinese
+Liu´an China Chinese
+Liverpool United Kingdom English
+Livonia United States English
+Livorno Italy Italian
+Liyang China Chinese
+Liège Belgium Dutch
+Ljubertsy Russian Federation Russian
+Lleida (Lérida) Spain Spanish
+Logroño Spain Spanish
+Loja Ecuador Spanish
+Lomas de Zamora Argentina Spanish
+London Canada English
+London United Kingdom English
+Londrina Brazil Portuguese
+Long Beach United States English
+Long Xuyen Vietnam Vietnamese
+Longjing China Chinese
+Longkou China Chinese
+Longueuil Canada English
+Longyan China Chinese
+Los Angeles Chile Spanish
+Los Angeles United States English
+Los Cabos Mexico Spanish
+Los Teques Venezuela Spanish
+Loudi China Chinese
+Louisville United States English
+Lowell United States English
+Lower Hutt New Zealand English
+Lubbock United States English
+Lublin Poland Polish
+Luchou Taiwan Min
+Ludwigshafen am Rhein Germany German
+Lugansk Ukraine Ukrainian
+Lund Sweden Swedish
+Lungtan Taiwan Min
+Luohe China Chinese
+Luoyang China Chinese
+Luton United Kingdom English
+Lutsk Ukraine Ukrainian
+Luxor Egypt Arabic
+Luzhou China Chinese
+Luziânia Brazil Portuguese
+Lviv Ukraine Ukrainian
+Lyon France French
+Lysyt?ansk Ukraine Ukrainian
+L´Hospitalet de Llobregat Spain Spanish
+Lázaro Cárdenas Mexico Spanish
+Lódz Poland Polish
+Lübeck Germany German
+Lünen Germany German
+EXPLAIN
+SELECT Name FROM City
+WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
+City.Population > 100000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY Country range PRIMARY,Name Name 52 NULL 10 Using index condition; Using MRR
+1 PRIMARY City ref Population,Country Country 3 world.Country.Code 18 Using where
+SELECT Name FROM City
+WHERE City.Country IN (SELECT Code FROM Country WHERE Country.Name LIKE 'L%') AND
+City.Population > 100000;
+Name
+?iauliai
+Beirut
+Bengasi
+Daugavpils
+Kaunas
+Klaipeda
+Maseru
+Misrata
+Monrovia
+Panevezys
+Riga
+Tripoli
+Tripoli
+Vientiane
+Vilnius
+set join_buffer_size=default;
+show variables like 'join_buffer_size';
+Variable_name Value
+join_buffer_size 131072
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND City.Population > 3000000;
+Name Name
+Alexandria Egypt
+Ankara Turkey
+Baghdad Iraq
+Bangkok Thailand
+Berlin Germany
+Cairo Egypt
+Calcutta [Kolkata] India
+Chengdu China
+Chennai (Madras) India
+Chongqing China
+Ciudad de México Mexico
+Delhi India
+Dhaka Bangladesh
+Harbin China
+Ho Chi Minh City Vietnam
+Istanbul Turkey
+Jakarta Indonesia
+Jokohama [Yokohama] Japan
+Kanton [Guangzhou] China
+Karachi Pakistan
+Kinshasa Congo, The Democratic Republic of the
+Lahore Pakistan
+Lima Peru
+London United Kingdom
+Los Angeles United States
+Moscow Russian Federation
+Mumbai (Bombay) India
+New York United States
+Peking China
+Pusan South Korea
+Rangoon (Yangon) Myanmar
+Rio de Janeiro Brazil
+Riyadh Saudi Arabia
+Santafé de Bogotá Colombia
+Santiago de Chile Chile
+Seoul South Korea
+Shanghai China
+Shenyang China
+Singapore Singapore
+St Petersburg Russian Federation
+Sydney Australia
+São Paulo Brazil
+Teheran Iran
+Tianjin China
+Tokyo Japan
+Wuhan China
+set join_buffer_size=256;
+EXPLAIN
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND City.Population > 3000000;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE City range Population,Country Population 4 NULL # Using index condition; Using MRR
+1 SIMPLE Country eq_ref PRIMARY PRIMARY 3 world.City.Country #
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND City.Population > 3000000;
+Name Name
+Alexandria Egypt
+Ankara Turkey
+Baghdad Iraq
+Bangkok Thailand
+Berlin Germany
+Cairo Egypt
+Calcutta [Kolkata] India
+Chengdu China
+Chennai (Madras) India
+Chongqing China
+Ciudad de México Mexico
+Delhi India
+Dhaka Bangladesh
+Harbin China
+Ho Chi Minh City Vietnam
+Istanbul Turkey
+Jakarta Indonesia
+Jokohama [Yokohama] Japan
+Kanton [Guangzhou] China
+Karachi Pakistan
+Kinshasa Congo, The Democratic Republic of the
+Lahore Pakistan
+Lima Peru
+London United Kingdom
+Los Angeles United States
+Moscow Russian Federation
+Mumbai (Bombay) India
+New York United States
+Peking China
+Pusan South Korea
+Rangoon (Yangon) Myanmar
+Rio de Janeiro Brazil
+Riyadh Saudi Arabia
+Santafé de Bogotá Colombia
+Santiago de Chile Chile
+Seoul South Korea
+Shanghai China
+Shenyang China
+Singapore Singapore
+St Petersburg Russian Federation
+Sydney Australia
+São Paulo Brazil
+Teheran Iran
+Tianjin China
+Tokyo Japan
+Wuhan China
+set join_buffer_size=default;
+ALTER TABLE Country MODIFY Name varchar(52) NOT NULL default '';
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name
+?iauliai Lithuania
+Beirut Lebanon
+Bengasi Libyan Arab Jamahiriya
+Daugavpils Latvia
+Kaunas Lithuania
+Klaipeda Lithuania
+Maseru Lesotho
+Misrata Libyan Arab Jamahiriya
+Monrovia Liberia
+Panevezys Lithuania
+Riga Latvia
+Tripoli Lebanon
+Tripoli Libyan Arab Jamahiriya
+Vientiane Laos
+Vilnius Lithuania
+ALTER TABLE Country MODIFY Name varchar(300) NOT NULL default '';
+SELECT City.Name, Country.Name FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name
+?iauliai Lithuania
+Beirut Lebanon
+Bengasi Libyan Arab Jamahiriya
+Daugavpils Latvia
+Kaunas Lithuania
+Klaipeda Lithuania
+Maseru Lesotho
+Misrata Libyan Arab Jamahiriya
+Monrovia Liberia
+Panevezys Lithuania
+Riga Latvia
+Tripoli Lebanon
+Tripoli Libyan Arab Jamahiriya
+Vientiane Laos
+Vilnius Lithuania
+ALTER TABLE Country ADD COLUMN PopulationBar text;
+UPDATE Country
+SET PopulationBar=REPEAT('x', CAST(Population/100000 AS unsigned int));
+SELECT City.Name, Country.Name, Country.PopulationBar FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name PopulationBar
+?iauliai Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Beirut Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Bengasi Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Daugavpils Latvia xxxxxxxxxxxxxxxxxxxxxxxx
+Kaunas Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Klaipeda Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Maseru Lesotho xxxxxxxxxxxxxxxxxxxxxx
+Misrata Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Monrovia Liberia xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Panevezys Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Riga Latvia xxxxxxxxxxxxxxxxxxxxxxxx
+Tripoli Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Tripoli Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Vientiane Laos xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Vilnius Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+set join_buffer_size=256;
+SELECT City.Name, Country.Name, Country.PopulationBar FROM City,Country
+WHERE City.Country=Country.Code AND
+Country.Name LIKE 'L%' AND City.Population > 100000;
+Name Name PopulationBar
+?iauliai Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Beirut Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Bengasi Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Daugavpils Latvia xxxxxxxxxxxxxxxxxxxxxxxx
+Kaunas Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Klaipeda Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Maseru Lesotho xxxxxxxxxxxxxxxxxxxxxx
+Misrata Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Monrovia Liberia xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Panevezys Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Riga Latvia xxxxxxxxxxxxxxxxxxxxxxxx
+Tripoli Lebanon xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Tripoli Libyan Arab Jamahiriya xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Vientiane Laos xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+Vilnius Lithuania xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+set join_buffer_size=default;
+DROP DATABASE world;
+use test;
+CREATE TABLE t1(
+affiliatetometaid int NOT NULL default '0',
+uniquekey int NOT NULL default '0',
+metaid int NOT NULL default '0',
+affiliateid int NOT NULL default '0',
+xml text,
+isactive char(1) NOT NULL default 'Y',
+PRIMARY KEY (affiliatetometaid)
+);
+CREATE UNIQUE INDEX t1_uniquekey ON t1(uniquekey);
+CREATE INDEX t1_affiliateid ON t1(affiliateid);
+CREATE INDEX t1_metaid on t1 (metaid);
+INSERT INTO t1 VALUES
+(1616, 1571693233, 1391, 2, NULL, 'Y'), (1943, 1993216749, 1726, 2, NULL, 'Y');
+CREATE TABLE t2(
+metaid int NOT NULL default '0',
+name varchar(80) NOT NULL default '',
+dateadded timestamp NOT NULL ,
+xml text,
+status int default NULL,
+origin int default NULL,
+gid int NOT NULL default '1',
+formattypeid int default NULL,
+PRIMARY KEY (metaid)
+);
+CREATE INDEX t2_status ON t2(status);
+CREATE INDEX t2_gid ON t2(gid);
+CREATE INDEX t2_formattypeid ON t2(formattypeid);
+INSERT INTO t2 VALUES
+(1391, "I Just Died", "2003-10-02 10:07:37", "", 1, NULL, 3, NULL),
+(1726, "Me, Myself & I", "2003-12-05 11:24:36", " ", 1, NULL, 3, NULL);
+CREATE TABLE t3(
+mediaid int NOT NULL ,
+metaid int NOT NULL default '0',
+formatid int NOT NULL default '0',
+status int default NULL,
+path varchar(100) NOT NULL default '',
+datemodified timestamp NOT NULL ,
+resourcetype int NOT NULL default '1',
+parameters text,
+signature int default NULL,
+quality int NOT NULL default '255',
+PRIMARY KEY (mediaid)
+);
+CREATE INDEX t3_metaid ON t3(metaid);
+CREATE INDEX t3_formatid ON t3(formatid);
+CREATE INDEX t3_status ON t3(status);
+CREATE INDEX t3_metaidformatid ON t3(metaid,formatid);
+CREATE INDEX t3_signature ON t3(signature);
+CREATE INDEX t3_quality ON t3(quality);
+INSERT INTO t3 VALUES
+(6, 4, 8, 0, "010101_anastacia_spmidi.mid", "2004-03-16 13:40:00", 1, NULL, NULL, 255),
+(3343, 3, 8, 1, "010102_4VN4bsPwnxRQUJW5Zp1RhG2IL9vvl_8.mid", "2004-03-16 13:40:00", 1, NULL, NULL, 255);
+CREATE TABLE t4(
+formatid int NOT NULL ,
+name varchar(60) NOT NULL default '',
+formatclassid int NOT NULL default '0',
+mime varchar(60) default NULL,
+extension varchar(10) default NULL,
+priority int NOT NULL default '0',
+canaddtocapability char(1) NOT NULL default 'Y',
+PRIMARY KEY (formatid)
+);
+CREATE INDEX t4_formatclassid ON t4(formatclassid);
+CREATE INDEX t4_formats_idx ON t4(canaddtocapability);
+INSERT INTO t4 VALUES
+(19, "XHTML", 11, "text/html", "xhtml", 10, 'Y'),
+(54, "AMR (wide band)", 13, "audio/amr-wb", "awb", 0, 'Y');
+CREATE TABLE t5(
+formatclassid int NOT NULL ,
+name varchar(60) NOT NULL default '',
+priority int NOT NULL default '0',
+formattypeid int NOT NULL default '0',
+PRIMARY KEY (formatclassid)
+);
+CREATE INDEX t5_formattypeid on t5(formattypeid);
+INSERT INTO t5 VALUES
+(11, "Info", 0, 4), (13, "Digital Audio", 0, 2);
+CREATE TABLE t6(
+formattypeid int NOT NULL ,
+name varchar(60) NOT NULL default '',
+priority int default NULL,
+PRIMARY KEY (formattypeid)
+);
+INSERT INTO t6 VALUES
+(2, "Ringtones", 0);
+CREATE TABLE t7(
+metaid int NOT NULL default '0',
+artistid int NOT NULL default '0',
+PRIMARY KEY (metaid,artistid)
+);
+INSERT INTO t7 VALUES
+(4, 5), (3, 4);
+CREATE TABLE t8(
+artistid int NOT NULL ,
+name varchar(80) NOT NULL default '',
+PRIMARY KEY (artistid)
+);
+INSERT INTO t8 VALUES
+(5, "Anastacia"), (4, "John Mayer");
+CREATE TABLE t9(
+subgenreid int NOT NULL default '0',
+metaid int NOT NULL default '0',
+PRIMARY KEY (subgenreid,metaid)
+) ;
+CREATE INDEX t9_subgenreid ON t9(subgenreid);
+CREATE INDEX t9_metaid ON t9(metaid);
+INSERT INTO t9 VALUES
+(138, 4), (31, 3);
+CREATE TABLE t10(
+subgenreid int NOT NULL ,
+genreid int NOT NULL default '0',
+name varchar(80) NOT NULL default '',
+PRIMARY KEY (subgenreid)
+) ;
+CREATE INDEX t10_genreid ON t10(genreid);
+INSERT INTO t10 VALUES
+(138, 19, ''), (31, 3, '');
+CREATE TABLE t11(
+genreid int NOT NULL default '0',
+name char(80) NOT NULL default '',
+priority int NOT NULL default '0',
+masterclip char(1) default NULL,
+PRIMARY KEY (genreid)
+) ;
+CREATE INDEX t11_masterclip ON t11( masterclip);
+INSERT INTO t11 VALUES
+(19, "Pop & Dance", 95, 'Y'), (3, "Rock & Alternative", 100, 'Y');
+EXPLAIN
+SELECT t1.uniquekey, t1.xml AS affiliateXml,
+t8.name AS artistName, t8.artistid,
+t11.name AS genreName, t11.genreid, t11.priority AS genrePriority,
+t10.subgenreid, t10.name AS subgenreName,
+t2.name AS metaName, t2.metaid, t2.xml AS metaXml,
+t4.priority + t5.priority + t6.priority AS overallPriority,
+t3.path AS path, t3.mediaid,
+t4.formatid, t4.name AS formatName,
+t5.formatclassid, t5.name AS formatclassName,
+t6.formattypeid, t6.name AS formattypeName
+FROM t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11
+WHERE t7.metaid = t2.metaid AND t7.artistid = t8.artistid AND
+t9.metaid = t2.metaid AND t9.subgenreid = t10.subgenreid AND
+t10.genreid = t11.genreid AND t3.metaid = t2.metaid AND
+t3.formatid = t4.formatid AND t4.formatclassid = t5.formatclassid AND
+t4.canaddtocapability = 'Y' AND t5.formattypeid = t6.formattypeid AND
+t6.formattypeid IN (2) AND (t3.formatid IN (31, 8, 76)) AND
+t1.metaid = t2.metaid AND t1.affiliateid = '2';
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t6 system PRIMARY NULL NULL NULL 1
+1 SIMPLE t1 ref t1_affiliateid,t1_metaid t1_affiliateid 4 const 1
+1 SIMPLE t4 ref PRIMARY,t4_formatclassid,t4_formats_idx t4_formats_idx 1 const 1 Using index condition; Using where
+1 SIMPLE t5 eq_ref PRIMARY,t5_formattypeid PRIMARY 4 test.t4.formatclassid 1 Using where
+1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.metaid 1
+1 SIMPLE t7 ref PRIMARY PRIMARY 4 test.t1.metaid 1 Using index
+1 SIMPLE t8 eq_ref PRIMARY PRIMARY 4 test.t7.artistid 1
+1 SIMPLE t9 ref PRIMARY,t9_subgenreid,t9_metaid t9_metaid 4 test.t7.metaid 2 Using index condition
+1 SIMPLE t10 eq_ref PRIMARY,t10_genreid PRIMARY 4 test.t9.subgenreid 1
+1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t10.genreid 1
+1 SIMPLE t3 ref t3_metaid,t3_formatid,t3_metaidformatid t3_metaid 4 test.t1.metaid 2 Using where
+SELECT t1.uniquekey, t1.xml AS affiliateXml,
+t8.name AS artistName, t8.artistid,
+t11.name AS genreName, t11.genreid, t11.priority AS genrePriority,
+t10.subgenreid, t10.name AS subgenreName,
+t2.name AS metaName, t2.metaid, t2.xml AS metaXml,
+t4.priority + t5.priority + t6.priority AS overallPriority,
+t3.path AS path, t3.mediaid,
+t4.formatid, t4.name AS formatName,
+t5.formatclassid, t5.name AS formatclassName,
+t6.formattypeid, t6.name AS formattypeName
+FROM t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11
+WHERE t7.metaid = t2.metaid AND t7.artistid = t8.artistid AND
+t9.metaid = t2.metaid AND t9.subgenreid = t10.subgenreid AND
+t10.genreid = t11.genreid AND t3.metaid = t2.metaid AND
+t3.formatid = t4.formatid AND t4.formatclassid = t5.formatclassid AND
+t4.canaddtocapability = 'Y' AND t5.formattypeid = t6.formattypeid AND
+t6.formattypeid IN (2) AND (t3.formatid IN (31, 8, 76)) AND
+t1.metaid = t2.metaid AND t1.affiliateid = '2';
+uniquekey affiliateXml artistName artistid genreName genreid genrePriority subgenreid subgenreName metaName metaid metaXml overallPriority path mediaid formatid formatName formatclassid formatclassName formattypeid formattypeName
+DROP TABLE t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11;
+CREATE TABLE t1 (a1 int, filler1 char(64) default ' ' );
+CREATE TABLE t2 (
+a2 int, b2 int, filler2 char(64) default ' ',
+PRIMARY KEY idx(a2,b2,filler2)
+) ;
+CREATE TABLE t3 (b3 int, c3 int, INDEX idx(b3));
+INSERT INTO t1(a1) VALUES
+(4), (7), (1), (9), (8), (5), (3), (6), (2);
+INSERT INTO t2(a2,b2) VALUES
+(1,30), (3,40), (2,61), (6,73), (8,92), (9,27), (4,18), (5,84), (7,56),
+(4,14), (6,76), (8,98), (7,55), (1,39), (2,68), (3,45), (9,21), (5,81),
+(5,88), (2,65), (6,74), (9,23), (1,37), (3,44), (4,17), (8,99), (7,51),
+(9,28), (7,52), (1,33), (4,13), (5,87), (3,43), (8,91), (2,62), (6,79),
+(3,49), (8,93), (7,34), (5,82), (6,78), (2,63), (1,32), (9,22), (4,11);
+INSERT INTO t3 VALUES
+(30,302), (92,923), (18,187), (45,459), (30,309),
+(39,393), (68,685), (45,458), (21,210), (81,817),
+(40,405), (61,618), (73,738), (92,929), (27,275),
+(18,188), (84,846), (56,564), (14,144), (76,763),
+(98,982), (55,551), (17,174), (99,998), (51,513),
+(28,282), (52,527), (33,336), (13,138), (87,878),
+(43,431), (91,916), (62,624), (79,797), (49,494),
+(93,933), (34,347), (82,829), (78,780), (63,634),
+(32,329), (22,228), (11,114), (74,749), (23,236);
+EXPLAIN
+SELECT a1<>a2, a1, a2, b2, b3, c3,
+SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2
+FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using where
+1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 Using index
+1 SIMPLE t3 ref idx idx 5 test.t2.b2 5 Using where
+SELECT a1<>a2, a1, a2, b2, b3, c3,
+SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2
+FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7;
+a1<>a2 a1 a2 b2 b3 c3 s1 s2
+0 1 1 30 30 309
+0 1 1 32 32 329
+0 2 2 61 61 618
+0 3 3 45 45 458
+0 3 3 45 45 459
+0 4 4 13 13 138
+0 4 4 18 18 188
+0 5 5 82 82 829
+0 5 5 87 87 878
+0 6 6 73 73 738
+0 6 6 74 74 749
+0 8 8 92 92 929
+0 8 8 99 99 998
+0 9 9 22 22 228
+set join_buffer_size=512;
+EXPLAIN
+SELECT a1<>a2, a1, a2, b2, b3, c3,
+SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2
+FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using where
+1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 Using index
+1 SIMPLE t3 ref idx idx 5 test.t2.b2 5 Using where
+SELECT a1<>a2, a1, a2, b2, b3, c3,
+SUBSTR(filler1,1,1) AS s1, SUBSTR(filler2,1,1) AS s2
+FROM t1,t2,t3 WHERE a1=a2 AND b2=b3 AND MOD(c3,10)>7;
+a1<>a2 a1 a2 b2 b3 c3 s1 s2
+0 1 1 30 30 309
+0 1 1 32 32 329
+0 2 2 61 61 618
+0 3 3 45 45 458
+0 3 3 45 45 459
+0 4 4 13 13 138
+0 4 4 18 18 188
+0 5 5 82 82 829
+0 5 5 87 87 878
+0 6 6 73 73 738
+0 6 6 74 74 749
+0 8 8 92 92 929
+0 8 8 99 99 998
+0 9 9 22 22 228
+DROP TABLE t1,t2,t3;
+CREATE TABLE t1 (a int, b int, INDEX idx(b));
+CREATE TABLE t2 (a int, b int, INDEX idx(a));
+INSERT INTO t1 VALUES (5,30), (3,20), (7,40), (2,10), (8,30), (1,10), (4,20);
+INSERT INTO t2 VALUES (7,10), (1,20), (2,20), (8,20), (8,10), (1,20);
+INSERT INTO t2 VALUES (1,10), (4,20), (3,20), (7,20), (7,10), (1,20);
+set join_buffer_size=32;
+Warnings:
+Warning 1292 Truncated incorrect join_buffer_size value: '32'
+EXPLAIN SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b >= 30;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL idx NULL NULL NULL 7 Using where
+1 SIMPLE t2 ref idx idx 5 test.t1.a 2
+SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b >= 30;
+a b a b
+7 40 7 10
+7 40 7 10
+7 40 7 20
+8 30 8 10
+8 30 8 20
+DROP TABLE t1,t2;
+
+BUG#40136: Group by is ignored when join buffer is used for an outer join
+
+create table t1(a int PRIMARY KEY, b int);
+insert into t1 values
+(5, 10), (2, 70), (7, 80), (6, 20), (1, 50), (9, 40), (8, 30), (3, 60);
+create table t2 (p int, a int, INDEX i_a(a));
+insert into t2 values
+(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
+(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
+explain
+select t1.a, count(t2.p) as count
+from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL PRIMARY 4 NULL 4 Using index
+1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where
+select t1.a, count(t2.p) as count
+from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
+a count
+1 1
+2 0
+3 2
+5 0
+6 0
+7 2
+8 0
+9 0
+drop table t1, t2;
+#
+# Bug #40134: outer join with not exists optimization and join buffer
+#
+set join_buffer_size=default;
+CREATE TABLE t1 (a int NOT NULL);
+INSERT INTO t1 VALUES (2), (4), (3), (5), (1);
+CREATE TABLE t2 (a int NOT NULL, b int NOT NULL, INDEX i_a(a));
+INSERT INTO t2 VALUES (4,10), (2,10), (2,30), (2,20), (4,20);
+EXPLAIN
+SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 5
+1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists
+SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
+a a b
+3 NULL NULL
+5 NULL NULL
+1 NULL NULL
+DROP TABLE t1, t2;
+#
+# BUG#40268: Nested outer join with not null-rejecting where condition
+# over an inner table which is not the last in the nest
+#
+CREATE TABLE t2 (a int, b int, c int);
+CREATE TABLE t3 (a int, b int, c int);
+CREATE TABLE t4 (a int, b int, c int);
+INSERT INTO t2 VALUES (3,3,0), (4,2,0), (5,3,0);
+INSERT INTO t3 VALUES (1,2,0), (2,2,0);
+INSERT INTO t4 VALUES (3,2,0), (4,2,0);
+SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
+FROM t2 LEFT JOIN (t3, t4) ON t2.b=t4.b
+WHERE t3.a+2<t2.a OR t3.c IS NULL;
+a b a b a b
+3 3 NULL NULL NULL NULL
+4 2 1 2 3 2
+4 2 1 2 4 2
+5 3 NULL NULL NULL NULL
+DROP TABLE t2, t3, t4;
+#
+# Bug #40192: outer join with where clause when using BNL
+#
+create table t1 (a int, b int);
+insert into t1 values (2, 20), (3, 30), (1, 10);
+create table t2 (a int, c int);
+insert into t2 values (1, 101), (3, 102), (1, 100);
+select * from t1 left join t2 on t1.a=t2.a;
+a b a c
+1 10 1 100
+1 10 1 101
+2 20 NULL NULL
+3 30 3 102
+explain select * from t1 left join t2 on t1.a=t2.a where t2.c=102 or t2.c is null;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
+select * from t1 left join t2 on t1.a=t2.a where t2.c=102 or t2.c is null;
+a b a c
+2 20 NULL NULL
+3 30 3 102
+drop table t1, t2;
+#
+# Bug #40317: outer join with with constant on expression equal to FALSE
+#
+create table t1 (a int);
+insert into t1 values (30), (40), (20);
+create table t2 (b int);
+insert into t2 values (200), (100);
+select * from t1 left join t2 on (1=0);
+a b
+30 NULL
+40 NULL
+20 NULL
+explain select * from t1 left join t2 on (1=0) where a=40;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where
+select * from t1 left join t2 on (1=0) where a=40;
+a b
+40 NULL
+drop table t1, t2;
+#
+# Bug #41204: small buffer with big rec_per_key for ref access
+#
+CREATE TABLE t1 (a int);
+INSERT INTO t1 VALUES (0);
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1(a) SELECT a FROM t1;
+INSERT INTO t1 VALUES (20000), (10000);
+CREATE TABLE t2 (pk int AUTO_INCREMENT PRIMARY KEY, b int, c int, INDEX idx(b));
+INSERT INTO t2(b,c) VALUES (10000, 3), (20000, 7), (20000, 1), (10000, 9), (20000, 5);
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+INSERT INTO t2(b,c) SELECT b,c FROM t2;
+ANALYZE TABLE t1,t2;
+set join_buffer_size=1024;
+EXPLAIN SELECT AVG(c) FROM t1,t2 WHERE t1.a=t2.b;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2050 Using where
+1 SIMPLE t2 ref idx idx 5 test.t1.a 640
+SELECT AVG(c) FROM t1,t2 WHERE t1.a=t2.b;
+AVG(c)
+5.0000
+set join_buffer_size=default;
+DROP TABLE t1, t2;
+#
+# Bug #41894: big join buffer of level 7 used to join records
+# with null values in place of varchar strings
+#
+CREATE TABLE t1 (a int NOT NULL AUTO_INCREMENT PRIMARY KEY,
+b varchar(127) DEFAULT NULL);
+INSERT INTO t1(a) VALUES (1);
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+INSERT INTO t1(b) SELECT b FROM t1;
+CREATE TABLE t2 (a int NOT NULL PRIMARY KEY, b varchar(127) DEFAULT NULL);
+INSERT INTO t2 SELECT * FROM t1;
+CREATE TABLE t3 (a int NOT NULL PRIMARY KEY, b varchar(127) DEFAULT NULL);
+INSERT INTO t3 SELECT * FROM t1;
+set join_buffer_size=1024*1024;
+EXPLAIN
+SELECT COUNT(*) FROM t1,t2,t3
+WHERE t1.a=t2.a AND t2.a=t3.a AND
+t1.b IS NULL AND t2.b IS NULL AND t3.b IS NULL;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 16384 Using where
+1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where
+1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where
+SELECT COUNT(*) FROM t1,t2,t3
+WHERE t1.a=t2.a AND t2.a=t3.a AND
+t1.b IS NULL AND t2.b IS NULL AND t3.b IS NULL;
+COUNT(*)
+16384
+set join_buffer_size=default;
+DROP TABLE t1,t2,t3;
+#
+# Bug #42020: join buffer is used for outer join with fields of
+# several outer tables in join buffer
+#
+CREATE TABLE t1 (
+a bigint NOT NULL,
+PRIMARY KEY (a)
+);
+INSERT INTO t1 VALUES
+(2), (1);
+CREATE TABLE t2 (
+a bigint NOT NULL,
+b bigint NOT NULL,
+PRIMARY KEY (a,b)
+);
+INSERT INTO t2 VALUES
+(2,30), (2,40), (2,50), (2,60), (2,70), (2,80),
+(1,10), (1, 20), (1,30), (1,40), (1,50);
+CREATE TABLE t3 (
+pk bigint NOT NULL AUTO_INCREMENT,
+a bigint NOT NULL,
+b bigint NOT NULL,
+val bigint DEFAULT '0',
+PRIMARY KEY (pk),
+KEY idx (a,b)
+);
+INSERT INTO t3(a,b) VALUES
+(2,30), (2,40), (2,50), (2,60), (2,70), (2,80),
+(4,30), (4,40), (4,50), (4,60), (4,70), (4,80),
+(5,30), (5,40), (5,50), (5,60), (5,70), (5,80),
+(7,30), (7,40), (7,50), (7,60), (7,70), (7,80);
+SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val
+FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b)
+WHERE t1.a=t2.a;
+a a a b b val
+1 1 NULL 10 NULL NULL
+1 1 NULL 20 NULL NULL
+1 1 NULL 30 NULL NULL
+1 1 NULL 40 NULL NULL
+1 1 NULL 50 NULL NULL
+2 2 2 30 30 0
+2 2 2 40 40 0
+2 2 2 50 50 0
+2 2 2 60 60 0
+2 2 2 70 70 0
+2 2 2 80 80 0
+set join_buffer_size=256;
+EXPLAIN
+SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val
+FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b)
+WHERE t1.a=t2.a;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 2 Using index
+1 SIMPLE t2 ref PRIMARY PRIMARY 8 test.t1.a 1 Using index
+1 SIMPLE t3 ref idx idx 16 test.t1.a,test.t2.b 2
+SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val
+FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b)
+WHERE t1.a=t2.a;
+a a a b b val
+1 1 NULL 10 NULL NULL
+1 1 NULL 20 NULL NULL
+1 1 NULL 30 NULL NULL
+1 1 NULL 40 NULL NULL
+1 1 NULL 50 NULL NULL
+2 2 2 30 30 0
+2 2 2 40 40 0
+2 2 2 50 50 0
+2 2 2 60 60 0
+2 2 2 70 70 0
+2 2 2 80 80 0
+DROP INDEX idx ON t3;
+EXPLAIN
+SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val
+FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b)
+WHERE t1.a=t2.a;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index PRIMARY PRIMARY 8 NULL 2 Using index
+1 SIMPLE t2 ref PRIMARY PRIMARY 8 test.t1.a 1 Using index
+1 SIMPLE t3 ALL NULL NULL NULL NULL 24 Using where
+SELECT t1.a, t2.a, t3.a, t2.b, t3.b, t3.val
+FROM (t1,t2) LEFT JOIN t3 ON (t1.a=t3.a AND t2.b=t3.b)
+WHERE t1.a=t2.a;
+a a a b b val
+1 1 NULL 10 NULL NULL
+1 1 NULL 20 NULL NULL
+1 1 NULL 30 NULL NULL
+1 1 NULL 40 NULL NULL
+1 1 NULL 50 NULL NULL
+2 2 2 30 30 0
+2 2 2 40 40 0
+2 2 2 50 50 0
+2 2 2 60 60 0
+2 2 2 70 70 0
+2 2 2 80 80 0
+set join_buffer_size=default;
+DROP TABLE t1,t2,t3;
+create table t1(f1 int, f2 int);
+insert into t1 values (1,1),(2,2),(3,3);
+create table t2(f1 int not null, f2 int not null, f3 char(200), key(f1,f2));
+insert into t2 values (1,1, 'qwerty'),(1,2, 'qwerty'),(1,3, 'qwerty');
+insert into t2 values (2,1, 'qwerty'),(2,2, 'qwerty'),(2,3, 'qwerty'),
+(2,4, 'qwerty'),(2,5, 'qwerty');
+insert into t2 values (3,1, 'qwerty'),(3,4, 'qwerty');
+insert into t2 values (4,1, 'qwerty'),(4,2, 'qwerty'),(4,3, 'qwerty'),
+(4,4, 'qwerty');
+insert into t2 values (1,1, 'qwerty'),(1,2, 'qwerty'),(1,3, 'qwerty');
+insert into t2 values (2,1, 'qwerty'),(2,2, 'qwerty'),(2,3, 'qwerty'),
+(2,4, 'qwerty'),(2,5, 'qwerty');
+insert into t2 values (3,1, 'qwerty'),(3,4, 'qwerty');
+insert into t2 values (4,1, 'qwerty'),(4,2, 'qwerty'),(4,3, 'qwerty'),
+(4,4, 'qwerty');
+select t2.f1, t2.f2, t2.f3 from t1,t2
+where t1.f1=t2.f1 and t2.f2 between t1.f1 and t1.f2 and t2.f2 + 1 >= t1.f1 + 1;
+f1 f2 f3
+1 1 qwerty
+1 1 qwerty
+2 2 qwerty
+2 2 qwerty
+explain select t2.f1, t2.f2, t2.f3 from t1,t2
+where t1.f1=t2.f1 and t2.f2 between t1.f1 and t2.f2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t2 ref f1 f1 4 test.t1.f1 3 Using index condition
+drop table t1,t2;
+#
+# Bug #42955: join with GROUP BY/ORDER BY and when BKA is enabled
+#
+create table t1 (d int, id1 int, index idx1 (d, id1));
+insert into t1 values
+(3, 20), (2, 40), (3, 10), (1, 10), (3, 20), (1, 40), (2, 30), (3, 30);
+create table t2 (id1 int, id2 int, index idx2 (id1));
+insert into t2 values
+(20, 100), (30, 400), (20, 400), (30, 200), (10, 300), (10, 200), (40, 100),
+(40, 200), (30, 300), (10, 400), (20, 200), (20, 300);
+explain
+select t1.id1, sum(t2.id2) from t1 join t2 on t1.id1=t2.id1
+where t1.d=3 group by t1.id1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ref idx1 idx1 5 const 4 Using where; Using index
+1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2
+select t1.id1, sum(t2.id2) from t1 join t2 on t1.id1=t2.id1
+where t1.d=3 group by t1.id1;
+id1 sum(t2.id2)
+10 900
+20 2000
+30 900
+explain
+select t1.id1 from t1 join t2 on t1.id1=t2.id1
+where t1.d=3 and t2.id2 > 200 order by t1.id1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ref idx1 idx1 5 const 4 Using where; Using index
+1 SIMPLE t2 ref idx2 idx2 5 test.t1.id1 2 Using where
+select t1.id1 from t1 join t2 on t1.id1=t2.id1
+where t1.d=3 and t2.id2 > 200 order by t1.id1;
+id1
+10
+10
+20
+20
+20
+20
+30
+30
+drop table t1,t2;
+#
+# Bug #44019: star-like multi-join query executed optimizer_join_cache_level=6
+#
+create table t1 (a int, b int, c int, d int);
+create table t2 (b int, e varchar(16), index idx(b));
+create table t3 (d int, f varchar(16), index idx(d));
+create table t4 (c int, g varchar(16), index idx(c));
+insert into t1 values
+(5, 50, 500, 5000), (3, 30, 300, 3000), (9, 90, 900, 9000),
+(2, 20, 200, 2000), (4, 40, 400, 4000), (8, 80, 800, 800),
+(7, 70, 700, 7000);
+insert into t2 values
+(30, 'bbb'), (10, 'b'), (70, 'bbbbbbb'), (60, 'bbbbbb'),
+(31, 'bbb'), (11, 'b'), (71, 'bbbbbbb'), (61, 'bbbbbb'),
+(32, 'bbb'), (12, 'b'), (72, 'bbbbbbb'), (62, 'bbbbbb');
+insert into t3 values
+(4000, 'dddd'), (3000, 'ddd'), (1000, 'd'), (8000, 'dddddddd'),
+(4001, 'dddd'), (3001, 'ddd'), (1001, 'd'), (8001, 'dddddddd'),
+(4002, 'dddd'), (3002, 'ddd'), (1002, 'd'), (8002, 'dddddddd');
+insert into t4 values
+(200, 'cc'), (600, 'cccccc'), (300, 'ccc'), (500, 'ccccc'),
+(201, 'cc'), (601, 'cccccc'), (301, 'ccc'), (501, 'ccccc'),
+(202, 'cc'), (602, 'cccccc'), (302, 'ccc'), (502, 'ccccc');
+analyze table t2,t3,t4;
+explain
+select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4
+where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where
+1 SIMPLE t2 ref idx idx 5 test.t1.b 1
+1 SIMPLE t3 ref idx idx 5 test.t1.d 1
+1 SIMPLE t4 ref idx idx 5 test.t1.c 1
+select t1.a, t1.b, t1.c, t1.d, t2.e, t3.f, t4.g from t1,t2,t3,t4
+where t2.b=t1.b and t3.d=t1.d and t4.c=t1.c;
+a b c d e f g
+3 30 300 3000 bbb ddd ccc
+drop table t1,t2,t3,t4;
+#
+# Bug #44250: Corruption of linked join buffers when using BKA
+#
+CREATE TABLE t1 (
+id1 bigint(20) DEFAULT NULL,
+id2 bigint(20) DEFAULT NULL,
+id3 bigint(20) DEFAULT NULL,
+num1 bigint(20) DEFAULT NULL,
+num2 int(11) DEFAULT NULL,
+num3 bigint(20) DEFAULT NULL
+);
+CREATE TABLE t2 (
+id3 bigint(20) NOT NULL DEFAULT '0',
+id4 bigint(20) DEFAULT NULL,
+enum1 enum('Enabled','Disabled','Paused') DEFAULT NULL,
+PRIMARY KEY (id3)
+);
+CREATE TABLE t3 (
+id4 bigint(20) NOT NULL DEFAULT '0',
+text1 text,
+PRIMARY KEY (id4)
+);
+CREATE TABLE t4 (
+id2 bigint(20) NOT NULL DEFAULT '0',
+dummy int(11) DEFAULT '0',
+PRIMARY KEY (id2)
+);
+CREATE TABLE t5 (
+id1 bigint(20) NOT NULL DEFAULT '0',
+id2 bigint(20) NOT NULL DEFAULT '0',
+enum2 enum('Active','Deleted','Paused') DEFAULT NULL,
+PRIMARY KEY (id1,id2)
+);
+set join_buffer_size=2048;
+EXPLAIN
+SELECT STRAIGHT_JOIN t1.id1, t1.num3, t3.text1, t3.id4, t2.id3, t4.dummy
+FROM t1 JOIN t2 JOIN t3 JOIN t4 JOIN t5
+WHERE t1.id1=t5.id1 AND t1.id2=t5.id2 and t4.id2=t1.id2 AND
+t5.enum2='Active' AND t3.id4=t2.id4 AND t2.id3=t1.id3 AND t3.text1<'D';
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 349 Using where
+1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.id3 1 Using where
+1 SIMPLE t3 eq_ref PRIMARY PRIMARY 8 test.t2.id4 1 Using where
+1 SIMPLE t4 eq_ref PRIMARY PRIMARY 8 test.t1.id2 1
+1 SIMPLE t5 eq_ref PRIMARY PRIMARY 16 test.t1.id1,test.t1.id2 1 Using where
+SELECT STRAIGHT_JOIN t1.id1, t1.num3, t3.text1, t3.id4, t2.id3, t4.dummy
+FROM t1 JOIN t2 JOIN t3 JOIN t4 JOIN t5
+WHERE t1.id1=t5.id1 AND t1.id2=t5.id2 and t4.id2=t1.id2 AND
+t5.enum2='Active' AND t3.id4=t2.id4 AND t2.id3=t1.id3 AND t3.text1<'D';
+id1 num3 text1 id4 id3 dummy
+228172702 134 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0
+228172702 14 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0
+228172702 15 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0
+228172702 3 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 2567095402 2667134182 0
+228808822 1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 10 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 13 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 13 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 14 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 17 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 18 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 19 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 26 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 28 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 3 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 4 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 4 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 4 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 50 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 6 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 60 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 61 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 826928662 935693782 0
+228808822 62 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 84 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 89 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+228808822 9 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 2381969632 2482416112 0
+set join_buffer_size=default;
+DROP TABLE t1,t2,t3,t4,t5;
+#
+# Bug #46328: Use of aggregate function without GROUP BY clause
+# returns many rows (vs. one )
+#
+CREATE TABLE t1 (
+int_key int(11) NOT NULL,
+KEY int_key (int_key)
+);
+INSERT INTO t1 VALUES
+(0),(2),(2),(2),(3),(4),(5),(5),(6),(6),(8),(8),(9),(9);
+CREATE TABLE t2 (
+int_key int(11) NOT NULL,
+KEY int_key (int_key)
+);
+INSERT INTO t2 VALUES (2),(3);
+
+# The query shall return 1 record with a max value 9 and one of the
+# int_key values inserted above (undefined which one). A changed
+# execution plan may change the value in the second column
+SELECT MAX(t1.int_key), t1.int_key
+FROM t1 STRAIGHT_JOIN t2
+ORDER BY t1.int_key;
+MAX(t1.int_key) int_key
+9 0
+
+explain
+SELECT MAX(t1.int_key), t1.int_key
+FROM t1 STRAIGHT_JOIN t2
+ORDER BY t1.int_key;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL int_key 4 NULL 14 Using index
+1 SIMPLE t2 index NULL int_key 4 NULL 2 Using index
+
+DROP TABLE t1,t2;
+#
+# Bug #45019: join buffer contains two blob columns one of which is
+# used in the key employed to access the joined table
+#
+CREATE TABLE t1 (c1 int, c2 int, key (c2));
+INSERT INTO t1 VALUES (1,1);
+INSERT INTO t1 VALUES (2,2);
+CREATE TABLE t2 (c1 text, c2 text);
+INSERT INTO t2 VALUES('tt', 'uu');
+INSERT INTO t2 VALUES('zzzz', 'xxxxxxxxx');
+ANALYZE TABLE t1,t2;
+SELECT t1.*, t2.*, LENGTH(t2.c1), LENGTH(t2.c2) FROM t1,t2
+WHERE t1.c2=LENGTH(t2.c2) and t1.c1=LENGTH(t2.c1);
+c1 c2 c1 c2 LENGTH(t2.c1) LENGTH(t2.c2)
+2 2 tt uu 2 2
+DROP TABLE t1,t2;
+#
+# Regression test for
+# Bug#46733 - NULL value not returned for aggregate on empty result
+# set w/ semijoin on
+CREATE TABLE t1 (
+i int(11) NOT NULL,
+v varchar(1) DEFAULT NULL,
+PRIMARY KEY (i)
+);
+INSERT INTO t1 VALUES (10,'a'),(11,'b'),(12,'c'),(13,'d');
+CREATE TABLE t2 (
+i int(11) NOT NULL,
+v varchar(1) DEFAULT NULL,
+PRIMARY KEY (i)
+);
+INSERT INTO t2 VALUES (1,'x'),(2,'y');
+
+SELECT MAX(t1.i)
+FROM t1 JOIN t2 ON t2.v
+ORDER BY t2.v;
+MAX(t1.i)
+NULL
+Warnings:
+Warning 1292 Truncated incorrect INTEGER value: 'x'
+Warning 1292 Truncated incorrect INTEGER value: 'y'
+
+EXPLAIN
+SELECT MAX(t1.i)
+FROM t1 JOIN t2 ON t2.v
+ORDER BY t2.v;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where
+1 SIMPLE t1 index NULL PRIMARY 4 NULL 4 Using index
+
+DROP TABLE t1,t2;
+#
+# Bug#51092: Linked join buffer gives wrong result
+# for 3-way cross join
+#
+CREATE TABLE t1 (a INT, b INT);
+INSERT INTO t1 VALUES (1,1),(2,2);
+CREATE TABLE t2 (a INT, b INT);
+INSERT INTO t2 VALUES (1,1),(2,2);
+CREATE TABLE t3 (a INT, b INT);
+INSERT INTO t3 VALUES (1,1),(2,2);
+EXPLAIN SELECT t1.* FROM t1,t2,t3;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2
+SELECT t1.* FROM t1,t2,t3;
+a b
+1 1
+1 1
+1 1
+1 1
+2 2
+2 2
+2 2
+2 2
+DROP TABLE t1,t2,t3;
+#
+# BUG#52394 Segfault in JOIN_CACHE::get_offset () at sql_select.h:445
+#
+CREATE TABLE C(a int);
+INSERT INTO C VALUES(1),(2),(3),(4),(5);
+CREATE TABLE D (a int(11), b varchar(1));
+INSERT INTO D VALUES (6,'r'),(27,'o');
+CREATE TABLE E (a int(11) primary key, b varchar(1));
+INSERT INTO E VALUES
+(14,'d'),(15,'z'),(16,'e'),(17,'h'),(18,'b'),(19,'s'),(20,'e'),(21,'j'),(22,'e'),(23,'f'),(24,'v'),(25,'x'),(26,'m'),(27,'c');
+SELECT 1 FROM C,D,E WHERE D.a = E.a AND D.b = E.b;
+1
+DROP TABLE C,D,E;
+#
+# BUG#52540 Crash in JOIN_CACHE::set_match_flag_if_none () at sql_join_cache.cc:1883
+#
+CREATE TABLE t1 (a int);
+INSERT INTO t1 VALUES (2);
+CREATE TABLE t2 (a varchar(10));
+INSERT INTO t2 VALUES ('f'),('x');
+CREATE TABLE t3 (pk int(11) PRIMARY KEY);
+INSERT INTO t3 VALUES (2);
+CREATE TABLE t4 (a varchar(10));
+EXPLAIN SELECT 1
+FROM t2 LEFT JOIN
+((t1 JOIN t3 ON t1.a = t3.pk)
+LEFT JOIN t4 ON 1 )
+ON 1 ;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2
+1 SIMPLE t1 ALL NULL NULL NULL NULL 1 Using where
+1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index
+1 SIMPLE t4 ALL NULL NULL NULL NULL 0 Using where
+SELECT 1
+FROM t2 LEFT JOIN
+((t1 JOIN t3 ON t1.a = t3.pk)
+LEFT JOIN t4 ON 1 )
+ON 1 ;
+1
+1
+1
+DROP TABLE t1,t2,t3,t4;
+#
+# Bug#51084: Batched key access crashes for SELECT with
+# derived table and LEFT JOIN
+#
+CREATE TABLE t1 (
+carrier int,
+id int PRIMARY KEY
+);
+INSERT INTO t1 VALUES (1,11),(1,12),(2,13);
+CREATE TABLE t2 (
+scan_date int,
+package_id int
+);
+INSERT INTO t2 VALUES (2008,21),(2008,22);
+CREATE TABLE t3 (
+carrier int PRIMARY KEY,
+id int
+);
+INSERT INTO t3 VALUES (1,31);
+CREATE TABLE t4 (
+carrier_id int,
+INDEX carrier_id(carrier_id)
+);
+INSERT INTO t4 VALUES (31),(32);
+
+SELECT COUNT(*)
+FROM (t2 JOIN t1) LEFT JOIN (t3 JOIN t4 ON t3.id = t4.carrier_id)
+ON t3.carrier = t1.carrier;
+COUNT(*)
+6
+
+EXPLAIN
+SELECT COUNT(*)
+FROM (t2 JOIN t1) LEFT JOIN (t3 JOIN t4 ON t3.id = t4.carrier_id)
+ON t3.carrier = t1.carrier;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3
+1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.carrier 1
+1 SIMPLE t4 ref carrier_id carrier_id 5 test.t3.id 2 Using index
+
+DROP TABLE t1,t2,t3,t4;
+#
+# Bug#45267: Incomplete check caused wrong result.
+#
+CREATE TABLE t1 (
+`pk` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY
+);
+CREATE TABLE t3 (
+`pk` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY
+);
+INSERT INTO t3 VALUES
+(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),
+(16),(17),(18),(19),(20);
+CREATE TABLE t2 (
+`pk` int(11) NOT NULL AUTO_INCREMENT,
+`int_nokey` int(11) NOT NULL,
+`time_key` time NOT NULL,
+PRIMARY KEY (`pk`),
+KEY `time_key` (`time_key`)
+);
+INSERT INTO t2 VALUES (10,9,'22:36:46'),(11,0,'08:46:46');
+SELECT DISTINCT t1.`pk`
+FROM t1 RIGHT JOIN t2 STRAIGHT_JOIN t3 ON t2.`int_nokey` ON t2.`time_key`
+GROUP BY 1;
+pk
+NULL
+DROP TABLE IF EXISTS t1, t2, t3;
+#
+# BUG#52636 6.0 allowing JOINs on NULL values w/ optimizer_join_cache_level = 5-8
+#
+CREATE TABLE t1 (b int);
+INSERT INTO t1 VALUES (NULL),(3);
+CREATE TABLE t2 (a int, b int, KEY (b));
+INSERT INTO t2 VALUES (100,NULL),(150,200);
+explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2
+1 SIMPLE t2 ref b b 5 test.t1.b 2
+SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
+a
+NULL
+NULL
+delete from t1;
+INSERT INTO t1 VALUES (NULL),(NULL);
+explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2
+1 SIMPLE t2 ref b b 5 test.t1.b 2
+SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
+a
+NULL
+NULL
+DROP TABLE t1,t2;
+CREATE TABLE t1 (b varchar(100));
+INSERT INTO t1 VALUES (NULL),("some varchar");
+CREATE TABLE t2 (a int, b varchar(100), KEY (b));
+INSERT INTO t2 VALUES (100,NULL),(150,"varchar"),(200,NULL),(250,"long long varchar");
+explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL NULL NULL NULL NULL 2
+1 SIMPLE t2 ref b b 103 test.t1.b 2
+SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
+a
+NULL
+NULL
+DROP TABLE t1,t2;
+#
+# BUG#54359 "Extra rows with join_cache_level=7,8 and two joins
+# --and multi-column index"
+#
+CREATE TABLE t1 (
+`pk` int(11) NOT NULL,
+`col_int_key` int(11) DEFAULT NULL,
+`col_varchar_key` varchar(1) DEFAULT NULL,
+`col_varchar_nokey` varchar(1) DEFAULT NULL,
+KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`))
+;
+INSERT INTO t1 VALUES (4,9,'k','k');
+INSERT INTO t1 VALUES (12,5,'k','k');
+explain SELECT table2 .`col_int_key` FROM t1 table2,
+t1 table3 force index (`col_varchar_key`)
+where table3 .`pk` and table3 .`col_int_key` >= table2 .`pk`
+and table3 .`col_varchar_key` = table2 .`col_varchar_nokey`;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE table2 ALL NULL NULL NULL NULL 2 Using where
+1 SIMPLE table3 ref col_varchar_key col_varchar_key 4 test.table2.col_varchar_nokey 1 Using index condition; Using where
+SELECT table2 .`col_int_key` FROM t1 table2,
+t1 table3 force index (`col_varchar_key`)
+where table3 .`pk` and table3 .`col_int_key` >= table2 .`pk`
+and table3 .`col_varchar_key` = table2 .`col_varchar_nokey`;
+col_int_key
+9
+9
+drop table t1;
+#
+# BUG#54481 "GROUP BY loses effect with JOIN + ORDER BY + LIMIT
+# and join_cache_level=5-8"
+#
+CREATE TABLE t1 (
+`col_int_key` int,
+`col_datetime` datetime,
+KEY `col_int_key` (`col_int_key`)
+);
+INSERT INTO t1 VALUES (2,'2003-02-11 21:19:41');
+INSERT INTO t1 VALUES (3,'2009-10-18 02:27:49');
+INSERT INTO t1 VALUES (0,'2000-09-26 07:45:57');
+CREATE TABLE t2 (
+`col_int` int,
+`col_int_key` int,
+KEY `col_int_key` (`col_int_key`)
+);
+INSERT INTO t2 VALUES (14,1);
+INSERT INTO t2 VALUES (98,1);
+explain SELECT t1.col_int_key, t1.col_datetime
+FROM t1,t2
+WHERE t2.col_int_key = 1 AND t2.col_int >= 3
+GROUP BY t1.col_int_key
+ORDER BY t1.col_int_key, t1.col_datetime
+LIMIT 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL col_int_key 5 NULL 3 Using temporary; Using filesort
+1 SIMPLE t2 ref col_int_key col_int_key 5 const 1 Using where
+SELECT t1.col_int_key, t1.col_datetime
+FROM t1,t2
+WHERE t2.col_int_key = 1 AND t2.col_int >= 3
+GROUP BY t1.col_int_key
+ORDER BY t1.col_int_key, t1.col_datetime
+LIMIT 2;
+col_int_key col_datetime
+0 2000-09-26 07:45:57
+2 2003-02-11 21:19:41
+explain SELECT t1.col_int_key, t1.col_datetime
+FROM t1 force index (col_int_key), t2 ignore index (col_int_key)
+WHERE t2.col_int_key = 1 AND t2.col_int >= 3
+GROUP BY t1.col_int_key
+ORDER BY t1.col_int_key, t1.col_datetime
+LIMIT 2;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 index NULL col_int_key 5 NULL 3 Using temporary; Using filesort
+1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where
+SELECT t1.col_int_key, t1.col_datetime
+FROM t1 force index (col_int_key), t2 ignore index (col_int_key)
+WHERE t2.col_int_key = 1 AND t2.col_int >= 3
+GROUP BY t1.col_int_key
+ORDER BY t1.col_int_key, t1.col_datetime
+LIMIT 2;
+col_int_key col_datetime
+0 2000-09-26 07:45:57
+2 2003-02-11 21:19:41
+drop table t1,t2;
+
+# Bug#11766522 "59651: ASSERTION `TABLE_REF->HAS_RECORD' FAILED
+# WITH JOIN_CACHE_LEVEL=3"
+
+CREATE TABLE t1 (
+b varchar(20)
+) ;
+INSERT INTO t1 VALUES ('1'),('1');
+CREATE TABLE t4 (
+col253 text
+) ;
+INSERT INTO t4 VALUES (''),('pf');
+CREATE TABLE t6 (
+col282 timestamp
+) ;
+INSERT INTO t6 VALUES ('2010-11-07 01:04:45'),('2010-12-13 01:36:32');
+CREATE TABLE t7 (
+col319 timestamp NOT NULL,
+UNIQUE KEY idx263 (col319)
+) ;
+insert into t7 values("2000-01-01"),("2000-01-02");
+CREATE TABLE t3 (
+col582 char(230) CHARACTER SET utf8 DEFAULT NULL
+) ;
+INSERT INTO t3 VALUES ('cymej'),('spb');
+CREATE TABLE t5 (
+col712 time
+) ;
+insert into t5 values(0),(0);
+CREATE TABLE t8 (
+col804 char(169),
+col805 varchar(51)
+) ;
+INSERT INTO t8 VALUES ('tmqcb','pwk');
+CREATE TABLE t2 (
+col841 varchar(10)
+) ;
+INSERT INTO t2 VALUES (''),('');
+set join_buffer_size=1;
+Warnings:
+Warning 1292 Truncated incorrect join_buffer_size value: '1'
+select @@join_buffer_size;
+@@join_buffer_size
+128
+select count(*) from
+(t1 join t2 join t3)
+left join t4 on 1
+left join t5 on 1 like t4.col253
+left join t6 on t5.col712 is null
+left join t7 on t1.b <=>t7.col319
+left join t8 on t3.col582 <= 1;
+count(*)
+32
+drop table t1,t2,t3,t4,t5,t6,t7,t8;
+set @@join_buffer_size=default;
+set optimizer_join_cache_level = default;
+set optimizer_switch = default;
=== modified file 'mysql-test/r/join_cache_jcl1.result'
--- a/mysql-test/r/join_cache_jcl1.result 2011-05-26 09:22:35 +0000
+++ b/mysql-test/r/join_cache_jcl1.result 2011-06-08 13:24:56 +0000
@@ -1444,7 +1444,6 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
=== modified file 'mysql-test/r/join_cache_jcl2.result'
--- a/mysql-test/r/join_cache_jcl2.result 2011-05-26 09:22:35 +0000
+++ b/mysql-test/r/join_cache_jcl2.result 2011-06-08 13:24:56 +0000
@@ -1444,7 +1444,6 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
=== modified file 'mysql-test/r/join_cache_jcl3.result'
--- a/mysql-test/r/join_cache_jcl3.result 2011-05-26 09:22:35 +0000
+++ b/mysql-test/r/join_cache_jcl3.result 2011-06-08 13:24:56 +0000
@@ -1444,13 +1444,12 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
id select_type table type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 index NULL PRIMARY 4 NULL 4 Using index
-1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where
+1 SIMPLE t1 index NULL PRIMARY 4 NULL 8 Using index; Using temporary; Using filesort
+1 SIMPLE t2 ALL i_a NULL NULL NULL 10 Using where; Using join buffer (BNL, regular buffers)
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
a count
@@ -1475,7 +1474,7 @@ EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists
+1 SIMPLE t2 ALL i_a NULL NULL NULL 5 Using where; Not exists; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
a a b
3 NULL NULL
@@ -2137,7 +2136,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,20
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2147,7 +2146,7 @@ INSERT INTO t1 VALUES (NULL),(NULL);
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2160,7 +2159,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,"v
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 103 test.t1.b 2
+1 SIMPLE t2 ALL b NULL NULL NULL 4 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
=== modified file 'mysql-test/r/join_cache_jcl4.result'
--- a/mysql-test/r/join_cache_jcl4.result 2011-05-26 09:22:35 +0000
+++ b/mysql-test/r/join_cache_jcl4.result 2011-06-08 13:24:56 +0000
@@ -1444,13 +1444,12 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
id select_type table type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 index NULL PRIMARY 4 NULL 4 Using index
-1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where
+1 SIMPLE t1 index NULL PRIMARY 4 NULL 8 Using index; Using temporary; Using filesort
+1 SIMPLE t2 ALL i_a NULL NULL NULL 10 Using where; Using join buffer (BNL, incremental buffers)
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
a count
@@ -1475,7 +1474,7 @@ EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists
+1 SIMPLE t2 ALL i_a NULL NULL NULL 5 Using where; Not exists; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
a a b
3 NULL NULL
@@ -2097,8 +2096,8 @@ ON t3.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using join buffer (BNL, incremental buffers)
-1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.carrier 1
-1 SIMPLE t4 ref carrier_id carrier_id 5 test.t3.id 2 Using index
+1 SIMPLE t3 ALL PRIMARY NULL NULL NULL 1 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t4 index carrier_id carrier_id 5 NULL 2 Using where; Using index; Using join buffer (BNL, incremental buffers)
DROP TABLE t1,t2,t3,t4;
#
@@ -2137,7 +2136,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,20
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2147,7 +2146,7 @@ INSERT INTO t1 VALUES (NULL),(NULL);
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2160,7 +2159,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,"v
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 103 test.t1.b 2
+1 SIMPLE t2 ALL b NULL NULL NULL 4 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
=== modified file 'mysql-test/r/join_cache_jcl5.result'
--- a/mysql-test/r/join_cache_jcl5.result 2011-04-26 08:49:10 +0000
+++ b/mysql-test/r/join_cache_jcl5.result 2011-06-08 13:24:56 +0000
@@ -1444,13 +1444,12 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 8 Using index; Using temporary; Using filesort
-1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where; Using join buffer (BKA, regular buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 10 Using where; Using join buffer (BNL, regular buffers)
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
a count
@@ -1475,7 +1474,7 @@ EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists; Using join buffer (BKA, regular buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 5 Using where; Not exists; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
a a b
3 NULL NULL
@@ -2137,7 +2136,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,20
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA, regular buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2147,7 +2146,7 @@ INSERT INTO t1 VALUES (NULL),(NULL);
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA, regular buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2160,7 +2159,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,"v
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 103 test.t1.b 2 Using join buffer (BKA, regular buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 4 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
=== modified file 'mysql-test/r/join_cache_jcl6.result'
--- a/mysql-test/r/join_cache_jcl6.result 2011-04-26 08:49:10 +0000
+++ b/mysql-test/r/join_cache_jcl6.result 2011-06-08 13:24:56 +0000
@@ -1444,13 +1444,12 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 8 Using index; Using temporary; Using filesort
-1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 10 Using where; Using join buffer (BNL, incremental buffers)
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
a count
@@ -1475,7 +1474,7 @@ EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 5 Using where; Not exists; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
a a b
3 NULL NULL
@@ -2097,8 +2096,8 @@ ON t3.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using join buffer (BNL, incremental buffers)
-1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.carrier 1
-1 SIMPLE t4 ref carrier_id carrier_id 5 test.t3.id 2 Using index
+1 SIMPLE t3 ALL PRIMARY NULL NULL NULL 1 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t4 index carrier_id carrier_id 5 NULL 2 Using where; Using index; Using join buffer (BNL, incremental buffers)
DROP TABLE t1,t2,t3,t4;
#
@@ -2137,7 +2136,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,20
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA, incremental buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2147,7 +2146,7 @@ INSERT INTO t1 VALUES (NULL),(NULL);
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA, incremental buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2160,7 +2159,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,"v
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 103 test.t1.b 2 Using join buffer (BKA, incremental buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 4 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
=== modified file 'mysql-test/r/join_cache_jcl7.result'
--- a/mysql-test/r/join_cache_jcl7.result 2011-04-26 08:49:10 +0000
+++ b/mysql-test/r/join_cache_jcl7.result 2011-06-08 13:24:56 +0000
@@ -1444,13 +1444,12 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 8 Using index; Using temporary; Using filesort
-1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where; Using join buffer (BKA_UNIQUE, regular buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 10 Using where; Using join buffer (BNL, regular buffers)
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
a count
@@ -1475,7 +1474,7 @@ EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists; Using join buffer (BKA_UNIQUE, regular buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 5 Using where; Not exists; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
a a b
3 NULL NULL
@@ -2137,7 +2136,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,20
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA_UNIQUE, regular buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2147,7 +2146,7 @@ INSERT INTO t1 VALUES (NULL),(NULL);
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA_UNIQUE, regular buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2160,7 +2159,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,"v
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 103 test.t1.b 2 Using join buffer (BKA_UNIQUE, regular buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 4 Using where; Using join buffer (BNL, regular buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
=== modified file 'mysql-test/r/join_cache_jcl8.result'
--- a/mysql-test/r/join_cache_jcl8.result 2011-04-26 08:49:10 +0000
+++ b/mysql-test/r/join_cache_jcl8.result 2011-06-08 13:24:56 +0000
@@ -1444,13 +1444,12 @@ create table t2 (p int, a int, INDEX i_a
insert into t2 values
(103, 7), (109, 3), (102, 3), (108, 1), (106, 3),
(107, 7), (105, 1), (101, 3), (100, 7), (110, 1);
-The following must not show "using join cache":
explain
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 8 Using index; Using temporary; Using filesort
-1 SIMPLE t2 ref i_a i_a 5 test.t1.a 2 Using where; Using join buffer (BKA_UNIQUE, incremental buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 10 Using where; Using join buffer (BNL, incremental buffers)
select t1.a, count(t2.p) as count
from t1 left join t2 on t1.a=t2.a and t2.p % 2 = 1 group by t1.a;
a count
@@ -1475,7 +1474,7 @@ EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref i_a i_a 4 test.t1.a 2 Using where; Not exists; Using join buffer (BKA_UNIQUE, incremental buffers)
+1 SIMPLE t2 ALL i_a NULL NULL NULL 5 Using where; Not exists; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE t2.b IS NULL;
a a b
3 NULL NULL
@@ -2097,8 +2096,8 @@ ON t3.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using join buffer (BNL, incremental buffers)
-1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.carrier 1
-1 SIMPLE t4 ref carrier_id carrier_id 5 test.t3.id 2 Using index
+1 SIMPLE t3 ALL PRIMARY NULL NULL NULL 1 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t4 index carrier_id carrier_id 5 NULL 2 Using where; Using index; Using join buffer (BNL, incremental buffers)
DROP TABLE t1,t2,t3,t4;
#
@@ -2137,7 +2136,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,20
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA_UNIQUE, incremental buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2147,7 +2146,7 @@ INSERT INTO t1 VALUES (NULL),(NULL);
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 5 test.t1.b 2 Using join buffer (BKA_UNIQUE, incremental buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
@@ -2160,7 +2159,7 @@ INSERT INTO t2 VALUES (100,NULL),(150,"v
explain SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
-1 SIMPLE t2 ref b b 103 test.t1.b 2 Using join buffer (BKA_UNIQUE, incremental buffers)
+1 SIMPLE t2 ALL b NULL NULL NULL 4 Using where; Using join buffer (BNL, incremental buffers)
SELECT t2.a FROM t1 LEFT JOIN t2 ON t2.b = t1.b;
a
NULL
=== modified file 'mysql-test/r/join_nested.result'
--- a/mysql-test/r/join_nested.result 2010-12-06 13:12:51 +0000
+++ b/mysql-test/r/join_nested.result 2011-06-08 13:24:56 +0000
@@ -851,8 +851,8 @@ ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (BNL, incremental buffers)
-1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 Using where
-1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t2 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on(((`test`.`t3`.`a` = 1) and (`test`.`t3`.`b` = `test`.`t2`.`b`) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) where 1
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
@@ -862,12 +862,12 @@ LEFT JOIN
ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b;
a b a b a b
4 2 1 2 3 2
-4 2 1 2 3 2
-4 2 1 2 3 2
-NULL NULL 2 2 3 2
4 2 1 2 4 2
+4 2 1 2 3 2
4 2 1 2 4 2
+4 2 1 2 3 2
4 2 1 2 4 2
+NULL NULL 2 2 3 2
NULL NULL 2 2 4 2
EXPLAIN EXTENDED
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
@@ -957,13 +957,13 @@ t0.b=t1.b AND
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
-1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
-1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
-1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t4 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
Warnings:
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t8`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` >= 2)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
@@ -1006,13 +1006,13 @@ t0.b=t1.b AND
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
-1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
-1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
-1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t4 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t8 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
Warnings:
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t8`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` >= 2)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
@@ -1056,13 +1056,13 @@ t0.b=t1.b AND
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ref idx_a idx_a 5 const 1 100.00 Using where
1 SIMPLE t1 ref idx_b idx_b 5 test.t0.b 2 100.00
-1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
-1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
-1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
-1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
-1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where
+1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t4 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t8 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
Warnings:
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t8`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` >= 2)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
@@ -1101,23 +1101,23 @@ t0.b=t1.b AND
(t8.b=t9.b OR t8.c IS NULL) AND
(t9.a=1);
a b a b a b a b a b a b a b a b a b a b
-1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1
-1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1
-1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
-1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1
-1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1
-1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2
-1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2
-1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2
-1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
+1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
-1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1
+1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2
+1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2
+1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1
+1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2
SELECT t2.a,t2.b
FROM t2;
a b
@@ -1729,11 +1729,11 @@ LEFT JOIN
(t5 JOIN t4 ON t5.carrier_id = t4.id)
ON t4.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index
-1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1
+1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 36
+1 SIMPLE t3 ref package_id package_id 5 test.t1.id 1 Using where; Using index
+1 SIMPLE t2 ref package_id package_id 5 test.t3.package_id 5 Using where; Using index
1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1
1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index
-1 SIMPLE t3 ref package_id package_id 5 test.t1.id 1 Using where; Using index
SELECT COUNT(*)
FROM ((t2 JOIN t1 ON t2.package_id = t1.id)
JOIN t3 ON t3.package_id = t1.id)
=== modified file 'mysql-test/r/join_nested_jcl6.result'
--- a/mysql-test/r/join_nested_jcl6.result 2010-11-30 13:55:22 +0000
+++ b/mysql-test/r/join_nested_jcl6.result 2011-06-08 13:24:56 +0000
@@ -856,8 +856,8 @@ ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t4 ALL NULL NULL NULL NULL 2 100.00 Using join buffer (BNL, incremental buffers)
-1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 100.00 Using where; Using join buffer (BKA, incremental buffers)
-1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (BNL, incremental buffers)
+1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t2 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on(((`test`.`t3`.`a` = 1) and (`test`.`t3`.`b` = `test`.`t2`.`b`) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) where 1
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
@@ -964,7 +964,7 @@ id select_type table type possible_keys
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t4 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
@@ -1013,11 +1013,11 @@ id select_type table type possible_keys
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t4 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t8 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
Warnings:
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t8`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` >= 2)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
@@ -1063,11 +1063,11 @@ id select_type table type possible_keys
1 SIMPLE t1 ref idx_b idx_b 5 test.t0.b 2 100.00 Using join buffer (BKA, incremental buffers)
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t4 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t5 ALL idx_b NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t8 ALL idx_b NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (BNL, incremental buffers)
Warnings:
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t8`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t7`.`b` = `test`.`t5`.`b`) and (`test`.`t6`.`b` >= 2)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
@@ -1734,11 +1734,11 @@ LEFT JOIN
(t5 JOIN t4 ON t5.carrier_id = t4.id)
ON t4.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
-1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index
-1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1 Using join buffer (BKA, incremental buffers)
+1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 36
+1 SIMPLE t3 ref package_id package_id 5 test.t1.id 1 Using where; Using index
+1 SIMPLE t2 ref package_id package_id 5 test.t3.package_id 5 Using where; Using index
1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1
1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index
-1 SIMPLE t3 ref package_id package_id 5 test.t1.id 1 Using where; Using index
SELECT COUNT(*)
FROM ((t2 JOIN t1 ON t2.package_id = t1.id)
JOIN t3 ON t3.package_id = t1.id)
@@ -1771,9 +1771,9 @@ ON t6.b >= 2 AND t5.b=t7.b AND
(t8.a > 0 OR t8.c IS NULL);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t5 ALL NULL NULL NULL NULL 3
-1 SIMPLE t7 ref b_i b_i 5 test.t5.b 2 Using join buffer (BKA, incremental buffers)
+1 SIMPLE t7 ALL b_i NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t6 ALL b_i NULL NULL NULL 3 Using where; Using join buffer (BNL, incremental buffers)
-1 SIMPLE t8 ref b_i b_i 5 test.t7.b 2 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t8 ALL b_i NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t5
LEFT JOIN
@@ -1825,7 +1825,7 @@ id select_type table type possible_keys
1 SIMPLE t5 ALL NULL NULL NULL NULL 2
1 SIMPLE t6 ALL NULL NULL NULL NULL 1 Using join buffer (BNL, incremental buffers)
1 SIMPLE t7 ref b_i b_i 5 const 0 Using join buffer (BKA, incremental buffers)
-1 SIMPLE t8 ALL b_i NULL NULL NULL 1 Using where; Using join buffer (BNL, incremental buffers)
+1 SIMPLE t8 ref b_i b_i 5 test.t5.b 2 Using join buffer (BKA, incremental buffers)
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t5 LEFT JOIN
(t6 LEFT JOIN t7 ON t7.b=2, t8)
=== modified file 'mysql-test/r/join_outer.result'
--- a/mysql-test/r/join_outer.result 2011-02-02 08:15:16 +0000
+++ b/mysql-test/r/join_outer.result 2011-06-08 13:24:56 +0000
@@ -39,11 +39,11 @@ NULL NULL NULL 4 7 D 7
select t1.*,t2.* from t1 left join t2 using (a);
grp a c id a c d
1 1 a 1 1 a 1
-2 2 b NULL NULL NULL NULL
-2 3 c NULL NULL NULL NULL
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
+2 2 b NULL NULL NULL NULL
+2 3 c NULL NULL NULL NULL
NULL NULL NULL NULL NULL NULL
select t1.*,t2.* from t1 left join t2 using (a) where t1.a=t2.a;
grp a c id a c d
@@ -95,7 +95,7 @@ id select_type table type possible_keys
explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 7
-1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.a 1 Using where
+1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
grp a c id a c d a
1 1 a 1 1 a 1 1
@@ -1023,40 +1023,40 @@ a b a b
7 8 7 5
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t2.b > t1.a OR t1.a > t1.b;
a b a b
-2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
+2 1 NULL NULL
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a NOT BETWEEN t2.b AND t1.b;
a b a b
-2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
+2 1 NULL NULL
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a BETWEEN t2.b AND t1.b);
a b a b
-2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
+2 1 NULL NULL
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a OR t2.b > t1.a OR t1.a > t1.b;
a b a b
-2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
+2 1 NULL NULL
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE NOT(t1.a != t2.a AND t1.a BETWEEN t2.b AND t1.b);
a b a b
-2 1 NULL NULL
3 2 3 0
4 3 4 1
6 5 6 4
7 8 7 5
+2 1 NULL NULL
8 7 NULL NULL
SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a = t2.a AND (t2.b > t1.a OR t1.a > t1.b);
a b a b
@@ -1228,7 +1228,7 @@ EXPLAIN
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref idx idx 4 test.t1.id 2 Using where; Not exists
+1 SIMPLE t2 ALL idx NULL NULL NULL 9 Using where; Not exists; Using join buffer (BNL, incremental buffers)
flush status;
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id a
@@ -1237,12 +1237,12 @@ id a
show status like 'Handler_read%';
Variable_name Value
Handler_read_first 0
-Handler_read_key 5
+Handler_read_key 0
Handler_read_last 0
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
-Handler_read_rnd_next 6
+Handler_read_rnd_next 16
DROP TABLE t1,t2;
CREATE TABLE t1 (c int PRIMARY KEY, e int NOT NULL);
INSERT INTO t1 VALUES (1,0), (2,1);
=== modified file 'mysql-test/r/join_outer_jcl6.result'
--- a/mysql-test/r/join_outer_jcl6.result 2011-02-02 15:05:14 +0000
+++ b/mysql-test/r/join_outer_jcl6.result 2011-06-08 13:24:56 +0000
@@ -100,7 +100,7 @@ id select_type table type possible_keys
explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 7
-1 SIMPLE t2 eq_ref PRIMARY PRIMARY 8 test.t1.a 1 Using where; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
grp a c id a c d a
1 1 a 1 1 a 1 1
@@ -1233,7 +1233,7 @@ EXPLAIN
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref idx idx 4 test.t1.id 2 Using where; Not exists; Using join buffer (BKA, incremental buffers)
+1 SIMPLE t2 ALL idx NULL NULL NULL 9 Using where; Not exists; Using join buffer (BNL, incremental buffers)
flush status;
SELECT t1.id, a FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.b IS NULL;
id a
@@ -1242,12 +1242,12 @@ id a
show status like 'Handler_read%';
Variable_name Value
Handler_read_first 0
-Handler_read_key 5
+Handler_read_key 0
Handler_read_last 0
-Handler_read_next 9
+Handler_read_next 0
Handler_read_prev 0
-Handler_read_rnd 3
-Handler_read_rnd_next 6
+Handler_read_rnd 0
+Handler_read_rnd_next 16
DROP TABLE t1,t2;
CREATE TABLE t1 (c int PRIMARY KEY, e int NOT NULL);
INSERT INTO t1 VALUES (1,0), (2,1);
=== modified file 'mysql-test/r/null_key_all.result'
--- a/mysql-test/r/null_key_all.result 2010-11-02 18:47:47 +0000
+++ b/mysql-test/r/null_key_all.result 2011-06-08 13:24:56 +0000
@@ -408,15 +408,15 @@ EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FRO
LEFT JOIN t3 ON t2.b=t3.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4
-1 SIMPLE t2 ref idx idx 5 test.t1.a 1
+1 SIMPLE t2 ALL idx NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t3 ref idx idx 5 test.t2.b 1 Using index
FLUSH STATUS ;
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
LEFT JOIN t3 ON t2.b=t3.b;
a a b b
1 1 1 NULL
-2 NULL NULL NULL
3 3 1 NULL
+2 NULL NULL NULL
4 NULL NULL NULL
SELECT FOUND_ROWS();
FOUND_ROWS()
@@ -424,12 +424,12 @@ FOUND_ROWS()
SHOW STATUS LIKE "handler_read%";
Variable_name Value
Handler_read_first 0
-Handler_read_key 6
+Handler_read_key 2
Handler_read_last 0
-Handler_read_next 2
+Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
-Handler_read_rnd_next 5
+Handler_read_rnd_next 8
DROP TABLE t1,t2,t3,t4;
CREATE TABLE t1 (
a int(11) default NULL,
=== modified file 'mysql-test/r/null_key_icp.result'
--- a/mysql-test/r/null_key_icp.result 2010-11-02 18:47:47 +0000
+++ b/mysql-test/r/null_key_icp.result 2011-06-08 13:24:56 +0000
@@ -408,15 +408,15 @@ EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FRO
LEFT JOIN t3 ON t2.b=t3.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4
-1 SIMPLE t2 ref idx idx 5 test.t1.a 1
+1 SIMPLE t2 ALL idx NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t3 ref idx idx 5 test.t2.b 1 Using index
FLUSH STATUS ;
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
LEFT JOIN t3 ON t2.b=t3.b;
a a b b
1 1 1 NULL
-2 NULL NULL NULL
3 3 1 NULL
+2 NULL NULL NULL
4 NULL NULL NULL
SELECT FOUND_ROWS();
FOUND_ROWS()
@@ -424,12 +424,12 @@ FOUND_ROWS()
SHOW STATUS LIKE "handler_read%";
Variable_name Value
Handler_read_first 0
-Handler_read_key 6
+Handler_read_key 2
Handler_read_last 0
-Handler_read_next 2
+Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
-Handler_read_rnd_next 5
+Handler_read_rnd_next 8
DROP TABLE t1,t2,t3,t4;
CREATE TABLE t1 (
a int(11) default NULL,
=== modified file 'mysql-test/r/null_key_none.result'
--- a/mysql-test/r/null_key_none.result 2010-08-27 06:36:54 +0000
+++ b/mysql-test/r/null_key_none.result 2011-06-08 13:24:56 +0000
@@ -407,15 +407,15 @@ EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FRO
LEFT JOIN t3 ON t2.b=t3.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4
-1 SIMPLE t2 ref idx idx 5 test.t1.a 1
+1 SIMPLE t2 ALL idx NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
1 SIMPLE t3 ref idx idx 5 test.t2.b 1 Using index
FLUSH STATUS ;
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
LEFT JOIN t3 ON t2.b=t3.b;
a a b b
1 1 1 NULL
-2 NULL NULL NULL
3 3 1 NULL
+2 NULL NULL NULL
4 NULL NULL NULL
SELECT FOUND_ROWS();
FOUND_ROWS()
@@ -423,12 +423,12 @@ FOUND_ROWS()
SHOW STATUS LIKE "handler_read%";
Variable_name Value
Handler_read_first 0
-Handler_read_key 6
+Handler_read_key 2
Handler_read_last 0
-Handler_read_next 2
+Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
-Handler_read_rnd_next 5
+Handler_read_rnd_next 8
DROP TABLE t1,t2,t3,t4;
CREATE TABLE t1 (
a int(11) default NULL,
=== modified file 'mysql-test/r/order_by_all.result'
--- a/mysql-test/r/order_by_all.result 2011-05-13 12:41:14 +0000
+++ b/mysql-test/r/order_by_all.result 2011-06-08 13:24:56 +0000
@@ -185,8 +185,8 @@ LEFT JOIN t2 USING(c)
LEFT JOIN t3 ON t3.c = t1.c;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
-2 1 25
3 2 123 Park Place
+2 1 25
4 2 453 Boardwalk
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
@@ -194,8 +194,8 @@ LEFT JOIN t2 ON t1.c = t2.c
LEFT JOIN t3 ON t3.c = t1.c;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
-2 1 25
3 2 123 Park Place
+2 1 25
4 2 453 Boardwalk
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
=== modified file 'mysql-test/r/order_by_icp_mrr.result'
--- a/mysql-test/r/order_by_icp_mrr.result 2011-04-05 13:28:34 +0000
+++ b/mysql-test/r/order_by_icp_mrr.result 2011-06-08 13:24:56 +0000
@@ -185,8 +185,8 @@ LEFT JOIN t2 USING(c)
LEFT JOIN t3 ON t3.c = t1.c;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
-2 1 25
3 2 123 Park Place
+2 1 25
4 2 453 Boardwalk
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
@@ -194,8 +194,8 @@ LEFT JOIN t2 ON t1.c = t2.c
LEFT JOIN t3 ON t3.c = t1.c;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
-2 1 25
3 2 123 Park Place
+2 1 25
4 2 453 Boardwalk
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
=== modified file 'mysql-test/r/order_by_none.result'
--- a/mysql-test/r/order_by_none.result 2011-04-05 13:28:34 +0000
+++ b/mysql-test/r/order_by_none.result 2011-06-08 13:24:56 +0000
@@ -184,8 +184,8 @@ LEFT JOIN t2 USING(c)
LEFT JOIN t3 ON t3.c = t1.c;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
-2 1 25
3 2 123 Park Place
+2 1 25
4 2 453 Boardwalk
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
@@ -193,8 +193,8 @@ LEFT JOIN t2 ON t1.c = t2.c
LEFT JOIN t3 ON t3.c = t1.c;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
-2 1 25
3 2 123 Park Place
+2 1 25
4 2 453 Boardwalk
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
=== modified file 'mysql-test/r/select_all.result'
--- a/mysql-test/r/select_all.result 2011-01-13 10:48:28 +0000
+++ b/mysql-test/r/select_all.result 2011-06-08 13:24:56 +0000
@@ -2398,7 +2398,7 @@ INSERT INTO t2 VALUES ('one'),('two'),('
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where
+1 SIMPLE t2 ALL a NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
@@ -3859,17 +3859,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (name text);
CREATE TABLE t2 (name text, n int, KEY (name(3)));
@@ -3933,17 +3933,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
access_id int NOT NULL default '0',
=== modified file 'mysql-test/r/select_all_jcl6.result'
--- a/mysql-test/r/select_all_jcl6.result 2011-01-13 15:37:54 +0000
+++ b/mysql-test/r/select_all_jcl6.result 2011-06-08 13:24:56 +0000
@@ -2402,7 +2402,7 @@ INSERT INTO t2 VALUES ('one'),('two'),('
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where
+1 SIMPLE t2 ALL a NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
@@ -3863,17 +3863,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (name text);
CREATE TABLE t2 (name text, n int, KEY (name(3)));
@@ -3937,17 +3937,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
access_id int NOT NULL default '0',
=== modified file 'mysql-test/r/select_icp_mrr.result'
--- a/mysql-test/r/select_icp_mrr.result 2011-01-13 10:48:28 +0000
+++ b/mysql-test/r/select_icp_mrr.result 2011-06-08 13:24:56 +0000
@@ -2398,7 +2398,7 @@ INSERT INTO t2 VALUES ('one'),('two'),('
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where
+1 SIMPLE t2 ALL a NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
@@ -3859,17 +3859,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (name text);
CREATE TABLE t2 (name text, n int, KEY (name(3)));
@@ -3933,17 +3933,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
access_id int NOT NULL default '0',
=== modified file 'mysql-test/r/select_icp_mrr_jcl6.result'
--- a/mysql-test/r/select_icp_mrr_jcl6.result 2011-01-13 15:37:54 +0000
+++ b/mysql-test/r/select_icp_mrr_jcl6.result 2011-06-08 13:24:56 +0000
@@ -2402,7 +2402,7 @@ INSERT INTO t2 VALUES ('one'),('two'),('
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where
+1 SIMPLE t2 ALL a NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
@@ -3863,17 +3863,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (name text);
CREATE TABLE t2 (name text, n int, KEY (name(3)));
@@ -3937,17 +3937,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
access_id int NOT NULL default '0',
=== modified file 'mysql-test/r/select_none.result'
--- a/mysql-test/r/select_none.result 2011-01-13 10:48:28 +0000
+++ b/mysql-test/r/select_none.result 2011-06-08 13:24:56 +0000
@@ -2397,7 +2397,7 @@ INSERT INTO t2 VALUES ('one'),('two'),('
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where
+1 SIMPLE t2 ALL a NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
@@ -3858,17 +3858,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (name text);
CREATE TABLE t2 (name text, n int, KEY (name(3)));
@@ -3932,17 +3932,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
access_id int NOT NULL default '0',
=== modified file 'mysql-test/r/select_none_jcl6.result'
--- a/mysql-test/r/select_none_jcl6.result 2011-01-13 15:37:54 +0000
+++ b/mysql-test/r/select_none_jcl6.result 2011-06-08 13:24:56 +0000
@@ -2401,7 +2401,7 @@ INSERT INTO t2 VALUES ('one'),('two'),('
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref a a 23 test.t1.a 2 Using where
+1 SIMPLE t2 ALL a NULL NULL NULL 5 Using where; Using join buffer (BNL, incremental buffers)
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
@@ -3862,17 +3862,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (name text);
CREATE TABLE t2 (name text, n int, KEY (name(3)));
@@ -3936,17 +3936,17 @@ cc 3 7
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
-1 SIMPLE t2 ref name name 6 test.t1.name 2 Using where
+1 SIMPLE t2 ALL name NULL NULL NULL 7 Using where; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 LEFT JOIN t2 ON t1.name=t2.name;
name name n
-ccc NULL NULL
bb bb 1
-bb bb 6
+aa aa 2
+aa aa 2
cc cc 3
cc cc 5
+bb bb 6
cc cc 7
-aa aa 2
-aa aa 2
+ccc NULL NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (
access_id int NOT NULL default '0',
=== modified file 'mysql-test/r/subquery_sj_all.result'
--- a/mysql-test/r/subquery_sj_all.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_all.result 2011-06-08 13:24:56 +0000
@@ -1688,7 +1688,7 @@ EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Materialize
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1719,8 +1719,8 @@ EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2)
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1835,7 +1835,7 @@ EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1893,9 +1893,9 @@ SELECT (SELECT COUNT(*) from t1),
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1904,9 +1904,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1926,9 +1926,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1944,9 +1944,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -5163,8 +5163,8 @@ insert into t3 values(2),(2);
explain select * from t1 where t1.a in (select t2.a from t2 left join t3 on t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
select * from t1 where t1.a in (select t2.a from t2 left join t3 on t2.a=t3.a);
a
1
@@ -5183,10 +5183,10 @@ explain SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2inner ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2inner ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
@@ -5405,9 +5405,9 @@ WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary
+1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t2
WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
=== modified file 'mysql-test/r/subquery_sj_all_jcl6.result'
--- a/mysql-test/r/subquery_sj_all_jcl6.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_all_jcl6.result 2011-06-08 13:24:56 +0000
@@ -1692,7 +1692,7 @@ EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Materialize
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1723,8 +1723,8 @@ EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2)
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1839,7 +1839,7 @@ EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1897,9 +1897,9 @@ SELECT (SELECT COUNT(*) from t1),
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1908,9 +1908,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1930,9 +1930,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1948,9 +1948,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -5167,8 +5167,8 @@ insert into t3 values(2),(2);
explain select * from t1 where t1.a in (select t2.a from t2 left join t3 on t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
select * from t1 where t1.a in (select t2.a from t2 left join t3 on t2.a=t3.a);
a
1
@@ -5187,10 +5187,10 @@ explain SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2inner ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2inner ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
@@ -5409,9 +5409,9 @@ WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary
+1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t2
WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
=== modified file 'mysql-test/r/subquery_sj_all_jcl7.result'
--- a/mysql-test/r/subquery_sj_all_jcl7.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_all_jcl7.result 2011-06-08 13:24:56 +0000
@@ -1692,7 +1692,7 @@ EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Materialize
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1723,8 +1723,8 @@ EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2)
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, regular buffers)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1839,7 +1839,7 @@ EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 system NULL NULL NULL NULL 1
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1897,9 +1897,9 @@ SELECT (SELECT COUNT(*) from t1),
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, regular buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1908,9 +1908,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1930,9 +1930,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, regular buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1948,9 +1948,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -5167,8 +5167,8 @@ insert into t3 values(2),(2);
explain select * from t1 where t1.a in (select t2.a from t2 left join t3 on t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
select * from t1 where t1.a in (select t2.a from t2 left join t3 on t2.a=t3.a);
a
1
=== modified file 'mysql-test/r/subquery_sj_firstmatch.result'
--- a/mysql-test/r/subquery_sj_firstmatch.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_firstmatch.result 2011-06-08 13:24:56 +0000
@@ -1719,8 +1719,8 @@ EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2)
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -5183,10 +5183,10 @@ explain SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY t2inner ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2inner ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
@@ -5405,9 +5405,9 @@ WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b2 ALL NULL NULL NULL NULL 2 FirstMatch(t2)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary
+1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t2
WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
@@ -5451,9 +5451,9 @@ FROM t2 AS nt2
WHERE 1 IN (SELECT it1.a
FROM t1 AS it1 JOIN t6 AS it3 ON it1.a=it3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where; FirstMatch
+1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch
1 PRIMARY nt2 ALL NULL NULL NULL NULL 2
-1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch(nt2)
SELECT *
FROM t2 AS nt2
WHERE 1 IN (SELECT it1.a
@@ -5467,9 +5467,9 @@ FROM t2 AS nt2, t8 AS nt4
WHERE 1 IN (SELECT it1.a
FROM t1 AS it1 JOIN t6 AS it3 ON it1.a=it3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where; FirstMatch
+1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch
1 PRIMARY nt2 ALL NULL NULL NULL NULL 2
-1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch(nt2)
1 PRIMARY nt4 ALL NULL NULL NULL NULL 8
SELECT *
FROM t2 AS nt2, t8 AS nt4
@@ -5499,9 +5499,9 @@ WHERE ot1.a IN (SELECT it2.a
FROM t1 AS it2 JOIN t8 AS it4 ON it2.a=it4.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot1 ALL NULL NULL NULL NULL 1
-1 PRIMARY it2 ALL NULL NULL NULL NULL 1 Using where; FirstMatch(ot1)
+1 PRIMARY it2 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it4 ALL NULL NULL NULL NULL 8 Using where; FirstMatch(ot1)
1 PRIMARY nt3 ALL NULL NULL NULL NULL 2
-1 PRIMARY it4 ALL NULL NULL NULL NULL 8 Using where; FirstMatch(nt3)
SELECT *
FROM t0 as ot1, t2 AS nt3
WHERE ot1.a IN (SELECT it2.a
=== modified file 'mysql-test/r/subquery_sj_firstmatch_jcl6.result'
--- a/mysql-test/r/subquery_sj_firstmatch_jcl6.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_firstmatch_jcl6.result 2011-06-08 13:24:56 +0000
@@ -1723,8 +1723,8 @@ EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2)
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -5187,10 +5187,10 @@ explain SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY t2inner ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2inner ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
@@ -5409,9 +5409,9 @@ WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b2 ALL NULL NULL NULL NULL 2 FirstMatch(t2)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary
+1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t2
WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
@@ -5455,9 +5455,9 @@ FROM t2 AS nt2
WHERE 1 IN (SELECT it1.a
FROM t1 AS it1 JOIN t6 AS it3 ON it1.a=it3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where; FirstMatch
+1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch
1 PRIMARY nt2 ALL NULL NULL NULL NULL 2
-1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch(nt2)
SELECT *
FROM t2 AS nt2
WHERE 1 IN (SELECT it1.a
@@ -5471,9 +5471,9 @@ FROM t2 AS nt2, t8 AS nt4
WHERE 1 IN (SELECT it1.a
FROM t1 AS it1 JOIN t6 AS it3 ON it1.a=it3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where; FirstMatch
+1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch
1 PRIMARY nt2 ALL NULL NULL NULL NULL 2
-1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch(nt2)
1 PRIMARY nt4 ALL NULL NULL NULL NULL 8
SELECT *
FROM t2 AS nt2, t8 AS nt4
@@ -5503,9 +5503,9 @@ WHERE ot1.a IN (SELECT it2.a
FROM t1 AS it2 JOIN t8 AS it4 ON it2.a=it4.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot1 ALL NULL NULL NULL NULL 1
-1 PRIMARY it2 ALL NULL NULL NULL NULL 1 Using where; FirstMatch(ot1)
+1 PRIMARY it2 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it4 ALL NULL NULL NULL NULL 8 Using where; FirstMatch(ot1)
1 PRIMARY nt3 ALL NULL NULL NULL NULL 2
-1 PRIMARY it4 ALL NULL NULL NULL NULL 8 Using where; FirstMatch(nt3)
SELECT *
FROM t0 as ot1, t2 AS nt3
WHERE ot1.a IN (SELECT it2.a
=== modified file 'mysql-test/r/subquery_sj_firstmatch_jcl7.result'
--- a/mysql-test/r/subquery_sj_firstmatch_jcl7.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_firstmatch_jcl7.result 2011-06-08 13:24:56 +0000
@@ -1723,8 +1723,8 @@ EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2)
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, regular buffers)
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -5187,10 +5187,10 @@ explain SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
1 PRIMARY t2inner ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary
SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
@@ -5455,9 +5455,9 @@ FROM t2 AS nt2
WHERE 1 IN (SELECT it1.a
FROM t1 AS it1 JOIN t6 AS it3 ON it1.a=it3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where; FirstMatch
+1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch
1 PRIMARY nt2 ALL NULL NULL NULL NULL 2
-1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch(nt2)
SELECT *
FROM t2 AS nt2
WHERE 1 IN (SELECT it1.a
@@ -5471,9 +5471,9 @@ FROM t2 AS nt2, t8 AS nt4
WHERE 1 IN (SELECT it1.a
FROM t1 AS it1 JOIN t6 AS it3 ON it1.a=it3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where; FirstMatch
+1 PRIMARY it1 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch
1 PRIMARY nt2 ALL NULL NULL NULL NULL 2
-1 PRIMARY it3 ALL NULL NULL NULL NULL 6 Using where; FirstMatch(nt2)
1 PRIMARY nt4 ALL NULL NULL NULL NULL 8
SELECT *
FROM t2 AS nt2, t8 AS nt4
@@ -5503,9 +5503,9 @@ WHERE ot1.a IN (SELECT it2.a
FROM t1 AS it2 JOIN t8 AS it4 ON it2.a=it4.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY ot1 ALL NULL NULL NULL NULL 1
-1 PRIMARY it2 ALL NULL NULL NULL NULL 1 Using where; FirstMatch(ot1)
+1 PRIMARY it2 ALL NULL NULL NULL NULL 1 Using where
+1 PRIMARY it4 ALL NULL NULL NULL NULL 8 Using where; FirstMatch(ot1)
1 PRIMARY nt3 ALL NULL NULL NULL NULL 2
-1 PRIMARY it4 ALL NULL NULL NULL NULL 8 Using where; FirstMatch(nt3)
SELECT *
FROM t0 as ot1, t2 AS nt3
WHERE ot1.a IN (SELECT it2.a
=== modified file 'mysql-test/r/subquery_sj_mat.result'
--- a/mysql-test/r/subquery_sj_mat.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_mat.result 2011-06-08 13:24:56 +0000
@@ -1893,9 +1893,9 @@ SELECT (SELECT COUNT(*) from t1),
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1904,9 +1904,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1926,9 +1926,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1944,9 +1944,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -5183,10 +5183,10 @@ explain SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2inner ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2inner ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
@@ -5405,9 +5405,9 @@ WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary
+1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t2
WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
=== modified file 'mysql-test/r/subquery_sj_mat_jcl6.result'
--- a/mysql-test/r/subquery_sj_mat_jcl6.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_mat_jcl6.result 2011-06-08 13:24:56 +0000
@@ -1897,9 +1897,9 @@ SELECT (SELECT COUNT(*) from t1),
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1908,9 +1908,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1930,9 +1930,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1948,9 +1948,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -5187,10 +5187,10 @@ explain SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2inner ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY t2inner ALL NULL NULL NULL NULL 2 Using join buffer (BNL, incremental buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t1
WHERE t1.a IN (SELECT t2.a
FROM t2 LEFT JOIN (t2 AS t2inner, t3) ON t2.a=t3.a);
@@ -5409,9 +5409,9 @@ WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
-1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End materialize
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Start temporary
+1 PRIMARY b1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, incremental buffers)
+1 PRIMARY b2 ALL NULL NULL NULL NULL 2 End temporary; Using join buffer (BNL, incremental buffers)
SELECT * FROM t2
WHERE f2 IN (SELECT t1.f1
FROM t1 LEFT OUTER JOIN (t2 AS b1 JOIN t2 AS b2 ON TRUE) ON TRUE);
=== modified file 'mysql-test/r/subquery_sj_mat_jcl7.result'
--- a/mysql-test/r/subquery_sj_mat_jcl7.result 2011-03-17 11:23:06 +0000
+++ b/mysql-test/r/subquery_sj_mat_jcl7.result 2011-06-08 13:24:56 +0000
@@ -1897,9 +1897,9 @@ SELECT (SELECT COUNT(*) from t1),
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, regular buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1908,9 +1908,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (t1.i) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
@@ -1930,9 +1930,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Start materialize
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (BNL, regular buffers)
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 LEFT JOIN t3 ON t2.i=t3.i);
i
@@ -1948,9 +1948,9 @@ i
EXPLAIN SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
-1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start materialize
-1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End materialize
+1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Start temporary
+1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (BNL, regular buffers)
+1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (BNL, regular buffers)
SELECT * FROM t1 WHERE (11) IN
(SELECT t3.i FROM t2 RIGHT JOIN t3 ON t2.i=t3.i);
i
=== modified file 'mysql-test/r/subselect_innodb.result'
--- a/mysql-test/r/subselect_innodb.result 2011-05-26 09:22:35 +0000
+++ b/mysql-test/r/subselect_innodb.result 2011-06-08 13:24:56 +0000
@@ -277,8 +277,8 @@ c373e9f5ad07993f3859444553544200 Last Di
EXPLAIN EXTENDED SELECT t2.*, t4.DOCTYPENAME, t1.CONTENTSIZE,t1.MIMETYPE FROM t2 INNER JOIN t4 ON t2.DOCTYPEID = t4.DOCTYPEID LEFT OUTER JOIN t1 ON t2.DOCID = t1.DOCID WHERE t2.FOLDERID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t3.FOLDERNAME = 'Level1') AND t3.FOLDERNAME = 'Level2') AND t3.FOLDERNAME = 'Level3') AND t3.FOLDERNAME = 'CopiedFolder') AND t3.FOLDERNAME = 'Movie Reviews') AND t2.DOCNAME = 'Last Discussion';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ALL DDOCTYPEID_IDX NULL NULL NULL 9 100.00 Using where
-1 PRIMARY t1 eq_ref PRIMARY PRIMARY 34 test.t2.DOCID 1 100.00
1 PRIMARY t4 eq_ref PRIMARY PRIMARY 34 test.t2.DOCTYPEID 1 100.00
+1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 2 100.00 Using where; Using join buffer (BNL, incremental buffers)
2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 func 1 100.00 Using where
2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 100.00 Using where
2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 100.00 Using where
=== added file 'mysql-test/t/join_cache_jcl0.test'
--- a/mysql-test/t/join_cache_jcl0.test 1970-01-01 00:00:00 +0000
+++ b/mysql-test/t/join_cache_jcl0.test 2011-06-08 13:24:56 +0000
@@ -0,0 +1,14 @@
+let $requires_join_cache_level = 0;
+--source include/have_join_cache_level.inc
+
+--eval set optimizer_join_cache_level = $requires_join_cache_level;
+
+if (`select locate('mrr_cost_based', @@optimizer_switch) > 0`)
+{
+ set optimizer_switch='mrr_cost_based=off';
+}
+
+--source include/join_cache.inc
+
+set optimizer_join_cache_level = default;
+set optimizer_switch = default;
=== modified file 'sql/sql_select.cc'
--- a/sql/sql_select.cc 2011-05-26 06:03:02 +0000
+++ b/sql/sql_select.cc 2011-06-08 13:24:56 +0000
@@ -339,6 +339,7 @@ private:
const JOIN_TAB *tab);
void optimize_straight_join(table_map join_tables);
bool greedy_search(table_map remaining_tables);
+ void set_join_buffer_properties();
bool best_extension_by_limited_search(table_map remaining_tables,
uint idx,
double record_count,
@@ -1621,11 +1622,10 @@ bool setup_semijoin_dups_elimination(JOI
{
/*
The final decision on whether or not join buffering will
- be used is taken in check_join_cache_usage(), which is
+ be used is taken in setup_join_buffering(), which is
called from make_join_readinfo()'s main loop.
- check_join_cache_usage() needs to know if duplicate
- weedout is used, so moving
- setup_semijoin_dups_elimination() from before the main
+ setup_join_buffering() needs to know if duplicate weedout is used,
+ so moving setup_semijoin_dups_elimination() from before the main
loop to after it is not possible. I.e.,
join->best_positions[sj_tableno].use_join_buffer is not
trustworthy at this point.
@@ -7083,6 +7083,14 @@ best_access_path(JOIN *join,
table_map best_ref_depends_map= 0;
double tmp;
bool best_uses_jbuf= false;
+ /*
+ Cannot use join buffering if either
+ 1. This is the first table in the join sequence, or
+ 2. Join buffering impossible for this table
+ */
+ disable_jbuf= disable_jbuf ||
+ idx == join->const_tables || // 1
+ s->use_join_cache == JOIN_CACHE::ALG_NONE; // 2
Loose_scan_opt loose_scan_opt;
DBUG_ENTER("best_access_path");
@@ -7553,7 +7561,7 @@ best_access_path(JOIN *join,
else
tmp= s->table->file->scan_time();
- if ((s->table->map & join->outer_join) || disable_jbuf) // Can't use join cache
+ if (disable_jbuf)
{
/*
For each record we have to:
@@ -7602,8 +7610,7 @@ best_access_path(JOIN *join,
best_key= 0;
/* range/index_merge/ALL/index access method are "independent", so: */
best_ref_depends_map= 0;
- best_uses_jbuf= test(!disable_jbuf && !((s->table->map &
- join->outer_join)));
+ best_uses_jbuf= test(!disable_jbuf);
}
}
@@ -7661,6 +7668,8 @@ bool Optimize_table_order::choose_table_
reset_nj_counters(join->join_list);
qsort2_cmp jtab_sort_func;
+ set_join_buffer_properties();
+
const bool straight_join= test(join->select_options & SELECT_STRAIGHT_JOIN);
table_map join_tables; ///< The tables involved in order selection
@@ -7714,6 +7723,48 @@ bool Optimize_table_order::choose_table_
/**
+ Set static join buffer properties for the tables involved in a join,
+ regardless of access methods and join order.
+ The property is pre-computed here and later used in best_access_path().
+*/
+
+void Optimize_table_order::set_join_buffer_properties()
+{
+ const bool force_unlinked_cache=
+ test(thd->variables.optimizer_join_cache_level & 1);
+
+ for (uint tableno= 0; tableno < join->tables; tableno++)
+ {
+ JOIN_TAB *const tab= join->join_tab + tableno;
+ TABLE_LIST *const tl= tab->table->pos_in_table_list;
+ /*
+ Cannot use join buffering if either
+ 1. Join buffering is disabled by the user, or
+ 2. Outer joined table, and join buffering disabled for outer join, or
+ 3. Semi-joined table, and join buffering disabled for semi-join, or
+ 4. Unlinked cache is forced and there are multiple inner tables of
+ this outer join.
+ */
+ if (thd->variables.optimizer_join_cache_level == 0 || // 1
+ ((tab->table->map & join->outer_join) && // 2
+ thd->variables.optimizer_join_cache_level <= 2) || // 2
+ (tab->emb_sj_nest != NULL && // 3
+ thd->variables.optimizer_join_cache_level <= 2) || // 3
+ (force_unlinked_cache && // 4
+ tl->in_outer_join_nest() && // 4
+ tl->embedding->nested_join->join_list.elements > 1)) // 4
+ tab->use_join_cache= JOIN_CACHE::ALG_NONE;
+ else if (thd->variables.optimizer_join_cache_level <= 4)
+ tab->use_join_cache= JOIN_CACHE::ALG_BNL;
+ else if (thd->variables.optimizer_join_cache_level <= 6)
+ tab->use_join_cache= JOIN_CACHE::ALG_BNL | JOIN_CACHE::ALG_BKA;
+ else if (thd->variables.optimizer_join_cache_level <= 8)
+ tab->use_join_cache= JOIN_CACHE::ALG_BNL | JOIN_CACHE::ALG_BKA_UNIQUE;
+ }
+}
+
+
+/**
Compare two JOIN_TAB objects based on the number of accessed records.
@param ptr1 pointer to first JOIN_TAB object
@@ -8357,14 +8408,14 @@ bool Optimize_table_order::best_extensio
const bool has_sj=
!(join->select_lex->sj_nests.is_empty() || join->emb_sjm_nest);
- JOIN_TAB *s;
JOIN_TAB *saved_refs[MAX_TABLES];
// Save 'best_ref[]' as we has to restore before return.
memcpy(saved_refs, join->best_ref + idx,
sizeof(JOIN_TAB*) * (join->tables - idx));
- for (JOIN_TAB **pos= join->best_ref + idx ; (s= *pos) ; pos++)
+ for (JOIN_TAB **pos= join->best_ref + idx; *pos; pos++)
{
+ JOIN_TAB *const s= *pos;
const table_map real_table_bit= s->table->map;
/*
@@ -8959,6 +9010,13 @@ static bool get_best_combination(JOIN *j
if (j->type == JT_CONST)
continue; // Handled in make_join_stat..
+ /*
+ Assign preliminary join cache setting based on decision from
+ greedy optimizer.
+ */
+ j->use_join_cache= join->best_positions[tableno].use_join_buffer ?
+ JOIN_CACHE::ALG_BNL : JOIN_CACHE::ALG_NONE;
+
j->loosescan_match_tab= NULL; //non-nulls will be set later
j->ref.key = -1;
j->ref.key_parts=0;
@@ -9006,7 +9064,7 @@ static bool get_best_combination(JOIN *j
case SJ_OPT_FIRST_MATCH:
/*
Remember the first and last semijoin inner tables; this serves to tell
- a JOIN_TAB's semijoin strategy (like in check_join_cache_usage()).
+ a JOIN_TAB's semijoin strategy (like in setup_join_buffering()).
*/
JOIN_TAB *last_sj_tab= tab + pos->n_sj_tables - 1;
JOIN_TAB *last_sj_inner=
@@ -10416,7 +10474,7 @@ static void push_index_cond(JOIN_TAB *ta
if (tab->use_join_cache &&
/*
if cache is used then the value is TRUE only
- for BKA[_UNIQUE] cache (see check_join_cache_usage func).
+ for BKA[_UNIQUE] cache (see setup_join_buffering() func).
In this case other_tbls_ok is an equivalent of
cache->is_key_access().
*/
@@ -10661,7 +10719,7 @@ void revise_cache_usage(JOIN_TAB *join_t
/**
- Check whether a join buffer can be used to join the specified table
+ Set up join buffering for a specified table, if possible.
@param tab joined table to check join buffer usage for
@param join join for which the check is performed
@@ -10670,12 +10728,29 @@ void revise_cache_usage(JOIN_TAB *join_t
@param icp_other_tables_ok[out] TRUE if condition pushdown supports
other tables presence
+ @return false if successful, true if error.
+ Currently, allocation errors for join cache objects are ignored,
+ and regular execution is chosen silently.
+
@details
The function finds out whether the table 'tab' can be joined using a join
buffer. This check is performed after the best execution plan for 'join'
has been chosen. If the function decides that a join buffer can be employed
then it selects the most appropriate join cache object that contains this
join buffer.
+ If it has already been decided to not use join buffering for this table,
+ no action is taken.
+
+ Often it is already decided that join buffering will be used earlier in
+ the optimization process, and this will also ensure that the most correct
+ cost for the operation is calculated, and hence the probability of
+ choosing an optimal join plan is higher. However, some join buffering
+ decisions cannot currently be taken before this stage, hence we need this
+ function to decide the most accurate join buffering strategy.
+
+ @todo Long-term it is the goal that join buffering strategy is decided
+ when the plan is selected.
+
The result of the check and the type of the the join buffer to be used
depend on:
- the access method to access rows of the joined table
@@ -10705,6 +10780,12 @@ void revise_cache_usage(JOIN_TAB *join_t
If the function creates a join cache object it tries to initialize it. The
failure to do this results in an invocation of the function that destructs
the created object.
+
+ Bitmap describing the chosen cache's properties is assigned to
+ tab->use_join_cache:
+ 1) the algorithm (JOIN_CACHE::ALG_NONE, JOIN_CACHE::ALG_BNL,
+ JOIN_CACHE::ALG_BKA, JOIN_CACHE::ALG_BKA_UNIQUE)
+ 2) the buffer's type (JOIN_CACHE::NON_INCREMENTAL_BUFFER or not).
@note
An inner table of a nested outer join or a nested semi-join can be currently
@@ -10742,34 +10823,29 @@ void revise_cache_usage(JOIN_TAB *join_t
}
#endif
- @return
- Bitmap describing the chosen cache's properties:
- 1) the algorithm (JOIN_CACHE::ALG_NONE, JOIN_CACHE::ALG_BNL,
- JOIN_CACHE::ALG_BKA, JOIN_CACHE::ALG_BKA_UNIQUE)
- 2) the buffer's type (JOIN_CACHE::NON_INCREMENTAL_BUFFER or not).
*/
-static
-uint check_join_cache_usage(JOIN_TAB *tab,
- JOIN *join, ulonglong options,
- uint no_jbuf_after,
- bool *icp_other_tables_ok)
+static bool setup_join_buffering(JOIN_TAB *tab, JOIN *join,
+ ulonglong options, uint no_jbuf_after,
+ bool *icp_other_tables_ok)
{
uint flags;
COST_VECT cost;
ha_rows rows;
uint bufsz= 4096;
JOIN_CACHE *prev_cache=0;
- uint cache_level= join->thd->variables.optimizer_join_cache_level;
- uint force_unlinked_cache= (cache_level & 1) ?
+ const uint cache_level= join->thd->variables.optimizer_join_cache_level;
+ const uint force_unlinked_cache= (cache_level & 1) ?
JOIN_CACHE::NON_INCREMENTAL_BUFFER : 0;
- uint i= tab-join->join_tab;
+ const uint tableno= tab - join->join_tab;
const uint tab_sj_strategy= tab->get_sj_strategy();
*icp_other_tables_ok= TRUE;
-
- if (cache_level == 0 || i == join->const_tables)
- return JOIN_CACHE::ALG_NONE;
+ if (cache_level == 0 || tableno == join->const_tables)
+ {
+ DBUG_ASSERT(tab->use_join_cache == JOIN_CACHE::ALG_NONE);
+ return false;
+ }
if (options & SELECT_NO_JOIN_CACHE)
goto no_join_cache;
/*
@@ -10778,80 +10854,81 @@ uint check_join_cache_usage(JOIN_TAB *ta
*/
if (tab->use_quick == QS_DYNAMIC_RANGE)
goto no_join_cache;
-
+
+ /* No join buffering if prevented by no_jbuf_after */
+ if (tableno > no_jbuf_after)
+ {
+ DBUG_ASSERT(tab->use_join_cache == JOIN_CACHE::ALG_NONE);
+ goto no_join_cache;
+ }
+ /* Non-linked join buffers can't guarantee one match */
+ if (force_unlinked_cache &&
+ tab->is_inner_table_of_outer_join() &&
+ !tab->is_single_inner_of_outer_join())
+ {
+ DBUG_ASSERT(tab->use_join_cache == JOIN_CACHE::ALG_NONE);
+ goto no_join_cache;
+ }
+ /*
+ An inner table of an outer join nest must not use join buffering if
+ the first inner table of that outer join nest does not use join buffering.
+ This condition is not handled by earlier optimizer stages.
+ */
+ if (tab->first_inner != NULL &&
+ tab->first_inner != tab &&
+ !tab->first_inner->use_join_cache)
+ goto no_join_cache;
+ /*
+ The first inner table of an outer join nest must not use join buffering
+ if the tables in the embedding outer join nest do not use join buffering.
+ This condition is not handled by earlier optimizer stages.
+ */
+ if (tab->first_upper != NULL &&
+ !tab->first_upper->use_join_cache)
+ goto no_join_cache;
/*
Use join cache with FirstMatch semi-join strategy only when semi-join
contains only one table.
*/
if (tab_sj_strategy == SJ_OPT_FIRST_MATCH &&
!tab->is_single_inner_of_semi_join())
+ {
+ DBUG_ASSERT(tab->use_join_cache == JOIN_CACHE::ALG_NONE);
goto no_join_cache;
- /*
- Non-linked join buffers can't guarantee one match
- */
- if (force_unlinked_cache &&
- tab->is_inner_table_of_outer_join() &&
- !tab->is_single_inner_of_outer_join())
- goto no_join_cache;
-
- /* No join buffering if prevented by no_jbuf_after */
- if (i > no_jbuf_after)
- goto no_join_cache;
-
+ }
/* No join buffering if this semijoin nest is handled by loosescan */
if (tab_sj_strategy == SJ_OPT_LOOSE_SCAN)
+ {
+ DBUG_ASSERT(tab->use_join_cache == JOIN_CACHE::ALG_NONE);
goto no_join_cache;
-
- /* Neither if semijoin Materialization */
+ }
+ /*
+ No join buffering if this semijoin nest is handled by materialization.
+ This condition is not handled by earlier optimizer stages.
+ */
if (sj_is_materialize_strategy(tab_sj_strategy))
goto no_join_cache;
- for (JOIN_TAB *first_inner= tab->first_inner; first_inner;
- first_inner= first_inner->first_upper)
- {
- if (first_inner != tab && !first_inner->use_join_cache)
- goto no_join_cache;
- }
- if (tab_sj_strategy == SJ_OPT_FIRST_MATCH &&
- tab->first_sj_inner_tab != tab &&
- !tab->first_sj_inner_tab->use_join_cache)
- goto no_join_cache;
- if (!tab[-1].use_join_cache)
- {
- /*
- Check whether table tab and the previous one belong to the same nest of
- inner tables and if so do not use join buffer when joining table tab.
- */
- if (tab->first_inner)
- {
- for (JOIN_TAB *first_inner= tab[-1].first_inner;
- first_inner;
- first_inner= first_inner->first_upper)
- {
- if (first_inner == tab->first_inner)
- goto no_join_cache;
- }
- }
- else if (tab_sj_strategy == SJ_OPT_FIRST_MATCH &&
- tab->first_sj_inner_tab == tab[-1].first_sj_inner_tab)
- goto no_join_cache;
- }
-
if (!force_unlinked_cache)
prev_cache= tab[-1].cache;
switch (tab->type) {
case JT_ALL:
+ /* Outer joined and semi-joined tables require join cache level > 2 */
if (cache_level <= 2 &&
(tab->first_inner || tab_sj_strategy == SJ_OPT_FIRST_MATCH))
+ {
+ DBUG_ASSERT(tab->use_join_cache == JOIN_CACHE::ALG_NONE);
goto no_join_cache;
+ }
if ((options & SELECT_DESCRIBE) ||
((tab->cache= new JOIN_CACHE_BNL(join, tab, prev_cache)) &&
!tab->cache->init()))
{
*icp_other_tables_ok= FALSE;
DBUG_ASSERT(might_do_join_buffering(cache_level, tab));
- return JOIN_CACHE::ALG_BNL | force_unlinked_cache;
+ tab->use_join_cache= JOIN_CACHE::ALG_BNL | force_unlinked_cache;
+ return false;
}
goto no_join_cache;
case JT_SYSTEM:
@@ -10859,7 +10936,10 @@ uint check_join_cache_usage(JOIN_TAB *ta
case JT_REF:
case JT_EQ_REF:
if (cache_level <= 4)
+ {
+ DBUG_ASSERT(tab->use_join_cache == JOIN_CACHE::ALG_NONE);
goto no_join_cache;
+ }
flags= HA_MRR_NO_NULL_ENDPOINTS;
if (tab->table->covering_keys.is_set(tab->ref.key))
flags|= HA_MRR_INDEX_ONLY;
@@ -10876,17 +10956,20 @@ uint check_join_cache_usage(JOIN_TAB *ta
{
DBUG_ASSERT(might_do_join_buffering(cache_level, tab));
if (cache_level <= 6)
- return JOIN_CACHE::ALG_BKA | force_unlinked_cache;
- return JOIN_CACHE::ALG_BKA_UNIQUE | force_unlinked_cache;
+ tab->use_join_cache= JOIN_CACHE::ALG_BKA | force_unlinked_cache;
+ else
+ tab->use_join_cache= JOIN_CACHE::ALG_BKA_UNIQUE | force_unlinked_cache;
+ return false;
}
goto no_join_cache;
default : ;
}
no_join_cache:
- if (cache_level>2)
- revise_cache_usage(tab);
- return JOIN_CACHE::ALG_NONE;
+ if (cache_level > 2)
+ revise_cache_usage(tab);
+ tab->use_join_cache= JOIN_CACHE::ALG_NONE;
+ return false;
}
/*
@@ -11280,12 +11363,10 @@ make_join_readinfo(JOIN *join, ulonglong
JOIN_TAB *const tab= join->join_tab+i;
TABLE *const table= tab->table;
bool icp_other_tables_ok;
- uint jcl;
tab->read_record.table= table;
tab->read_record.file=table->file;
tab->read_record.unlock_row= rr_unlock_row;
tab->next_select=sub_select; /* normal select */
- tab->use_join_cache= JOIN_CACHE::ALG_NONE;
tab->cache_idx_cond= 0;
tab->sorted= sorted;
sorted= false; // only first must be sorted
@@ -11325,12 +11406,12 @@ make_join_readinfo(JOIN *join, ulonglong
case JT_SYSTEM:
case JT_CONST:
/* Only happens with outer joins */
- if ((jcl= check_join_cache_usage(tab, join, options, no_jbuf_after,
- &icp_other_tables_ok)))
- {
- tab->use_join_cache= jcl;
+ if (setup_join_buffering(tab, join, options, no_jbuf_after,
+ &icp_other_tables_ok))
+ DBUG_RETURN(true);
+ if (tab->use_join_cache != JOIN_CACHE::ALG_NONE)
tab[-1].next_select= sub_select_cache;
- }
+
if (table->covering_keys.is_set(tab->ref.key) &&
!table->no_keyread)
table->set_keyread(TRUE);
@@ -11338,12 +11419,12 @@ make_join_readinfo(JOIN *join, ulonglong
push_index_cond(tab, tab->ref.key, icp_other_tables_ok);
break;
case JT_ALL:
- if ((jcl= check_join_cache_usage(tab, join, options, no_jbuf_after,
- &icp_other_tables_ok)))
- {
- tab->use_join_cache= jcl;
+ if (setup_join_buffering(tab, join, options, no_jbuf_after,
+ &icp_other_tables_ok))
+ DBUG_RETURN(true);
+ if (tab->use_join_cache != JOIN_CACHE::ALG_NONE)
tab[-1].next_select=sub_select_cache;
- }
+
/* These init changes read_record */
if (tab->use_quick == QS_DYNAMIC_RANGE)
{
@@ -11434,7 +11515,7 @@ make_join_readinfo(JOIN *join, ulonglong
for (uint i= join->const_tables; i < join->tables; i++)
{
JOIN_TAB *const tab=join->join_tab + i;
- if (tab->use_join_cache)
+ if (tab->use_join_cache != JOIN_CACHE::ALG_NONE)
{
JOIN_TAB *const sort_by_tab= join->get_sort_by_join_tab();
if (sort_by_tab)
=== modified file 'sql/sql_select.h'
--- a/sql/sql_select.h 2011-05-26 06:03:02 +0000
+++ b/sql/sql_select.h 2011-06-08 13:24:56 +0000
@@ -361,7 +361,11 @@ public:
*/
ha_rows limit;
TABLE_REF ref;
- /** Join cache type (same as return code of check_join_cache_level() */
+ /**
+ Join buffering strategy (same as return code of check_join_cache_level().
+ During optimization, this contains allowed join buffering strategies,
+ after optimization it contains chosen join buffering strategy (if any).
+ */
uint use_join_cache;
JOIN_CACHE *cache;
/*
@@ -556,7 +560,7 @@ st_join_table::st_join_table()
limit(0),
ref(),
- use_join_cache(FALSE),
+ use_join_cache(0),
cache(NULL),
cache_idx_cond(NULL),
Attachment: [text/bzr-bundle] bzr/roy.lyseng@oracle.com-20110608132456-r4djo01lnv937do1.bundle
| Thread |
|---|
| • bzr commit into mysql-trunk branch (roy.lyseng:3379) Bug#12316645 | Roy Lyseng | 8 Jun |
