Below is the list of changes that have just been committed into a local
5.1 repository of patg. When patg does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
For information on how to access the public repository
see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html
ChangeSet
1.2077 06/01/26 18:48:13 patg@stripped +8 -0
WL# 2986
More post review fixes/changes
mysql-test/t/partition_wl2986.test
1.1 06/01/26 18:48:09 patg@stripped +137 -0
WL# 2986
New test for WL# 2986 to show use of bitmap
mysql-test/r/partition_wl2986.result
1.1 06/01/26 18:48:09 patg@stripped +214 -0
WL# 2986
Not sure what to name this test - for WL# 2986
sql/sql_partition.cc
1.29 06/01/26 18:48:09 patg@stripped +0 -2
WL# 2986
Removed use_bit_array references per review
sql/opt_range.cc
1.199 06/01/26 18:48:09 patg@stripped +2 -2
WL# 2986
Fixed mistaken merge
sql/handler.h
1.182 06/01/26 18:48:09 patg@stripped +0 -1
WL# 2986
Removed use_bit_array member per review
sql/ha_partition.h
1.14 06/01/26 18:48:09 patg@stripped +0 -1
WL# 2986
Removed m_use_bit_array per review
sql/ha_partition.cc
1.31 06/01/26 18:48:09 patg@stripped +13 -5
WL# 2986
Post review fixes
* Added error handling
* Formating, style fixes
* removed any instances of use_bit_array
mysql-test/t/partition_wl2986.test
1.0 06/01/26 18:48:09 patg@stripped +0 -0
BitKeeper file /home/patg/mysql-build/mysql-5.1-wl2986/mysql-test/t/partition_wl2986.test
mysql-test/r/partition_wl2986.result
1.0 06/01/26 18:48:09 patg@stripped +0 -0
BitKeeper file /home/patg/mysql-build/mysql-5.1-wl2986/mysql-test/r/partition_wl2986.result
mysql-test/r/partition_pruning.result
1.7 06/01/26 18:48:08 patg@stripped +7 -7
WL# 2986
New results due to using bitmap in partition storage engine. These results
are correct, as verified with Sergey P.
# This is a BitKeeper patch. What follows are the unified diffs for the
# set of deltas contained in the patch. The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User: patg
# Host: govinda.patg.net
# Root: /home/patg/mysql-build/mysql-5.1-wl2986
--- 1.181/sql/handler.h 2006-01-24 19:01:48 -08:00
+++ 1.182/sql/handler.h 2006-01-26 18:48:09 -08:00
@@ -618,7 +618,6 @@
typedef struct {
uint32 start_part;
uint32 end_part;
- bool use_bit_array;
} part_id_range;
--- 1.198/sql/opt_range.cc 2006-01-25 22:07:42 -08:00
+++ 1.199/sql/opt_range.cc 2006-01-26 18:48:09 -08:00
@@ -2824,8 +2824,8 @@
while ((part_id= ppar->part_iter.get_next(&ppar->part_iter)) !=
NOT_A_PARTITION_ID)
{
- DBUG_PRINT("info", ("2:Mark subpartition %u as used", part_id));
- bitmap_set_bit(&part_info->used_partitions, part_id);
+ bitmap_set_bit(&part_info->used_partitions,
+ part_id * part_info->no_subparts + subpart_id);
}
res= 1; /* Some partitions were marked as used */
goto pop_and_go_right;
--- 1.30/sql/ha_partition.cc 2006-01-26 09:57:37 -08:00
+++ 1.31/sql/ha_partition.cc 2006-01-26 18:48:09 -08:00
@@ -2251,7 +2251,8 @@
}
/* Initialise the bitmap we use to determine what partitions are used */
- bitmap_init(&(m_part_info->used_partitions), NULL, m_tot_parts, TRUE);
+ if (bitmap_init(&(m_part_info->used_partitions), NULL, m_tot_parts, TRUE))
+ goto err;
bitmap_set_all(&(m_part_info->used_partitions));
file= m_file;
@@ -2297,6 +2298,7 @@
err_handler:
while (file-- != m_file)
(*file)->close();
+err:
DBUG_RETURN(error);
}
@@ -3048,7 +3050,9 @@
DBUG_RETURN(0);
}
- /* if we get here, then the current partition rnd_next returned failure */
+ /*
+ if we get here, then the current partition rnd_next returned failure
+ */
if (result == HA_ERR_RECORD_DELETED)
continue; // Probably MyISAM
@@ -3071,8 +3075,7 @@
break;
}
file= m_file[part_id];
- DBUG_PRINT("info", ("rnd_init on partition %d",
- part_id));
+ DBUG_PRINT("info", ("rnd_init on partition %d", part_id));
if ((result= file->ha_rnd_init(1)))
break;
late_extra_cache(part_id);
@@ -4978,7 +4981,12 @@
do
{
if (bitmap_is_set(&(m_part_info->used_partitions), (file - m_file)))
- in_range+= (*file)->records_in_range(inx, min_key, max_key);
+ {
+ ha_rows tmp_in_range= (*file)->records_in_range(inx, min_key, max_key);
+ if (tmp_in_range == HA_POS_ERROR || tmp_in_range == HA_OFFSET_ERROR)
+ DBUG_RETURN(tmp_in_range);
+ in_range+= tmp_in_range;
+ }
} while (*(++file));
DBUG_RETURN(in_range);
}
--- 1.13/sql/ha_partition.h 2006-01-25 22:08:29 -08:00
+++ 1.14/sql/ha_partition.h 2006-01-26 18:48:09 -08:00
@@ -100,7 +100,6 @@
bool m_create_handler; // Handler used to create table
bool m_is_sub_partitioned; // Is subpartitioned
bool m_ordered_scan_ongoing;
- bool m_use_bit_array;
/*
We keep track if all underlying handlers are MyISAM since MyISAM has a
--- 1.28/sql/sql_partition.cc 2006-01-25 22:08:29 -08:00
+++ 1.29/sql/sql_partition.cc 2006-01-26 18:48:09 -08:00
@@ -3639,7 +3639,6 @@
bool found_part_field= FALSE;
DBUG_ENTER("get_partition_set");
- part_spec->use_bit_array= FALSE;
part_spec->start_part= 0;
part_spec->end_part= no_parts - 1;
if ((index < MAX_KEY) &&
@@ -3757,7 +3756,6 @@
else
{
DBUG_ASSERT(sub_part != no_parts);
- part_spec->use_bit_array= TRUE;
part_spec->start_part= sub_part;
part_spec->end_part=sub_part+
(part_info->no_subparts*(part_info->no_parts-1));
--- New file ---
+++ mysql-test/r/partition_wl2986.result 06/01/26 18:48:09
DROP TABLE IF EXISTS `t1`;
Warnings:
Note 1051 Unknown table 't1'
CREATE TABLE `t1` (
`a` int(11) default NULL
)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (200),
PARTITION p1 VALUES LESS THAN (400),
PARTITION p2 VALUES LESS THAN (600),
PARTITION p3 VALUES LESS THAN (800),
PARTITION p4 VALUES LESS THAN (1001));
INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
DROP TABLE IF EXISTS `t2`;
Warnings:
Note 1051 Unknown table 't2'
CREATE TABLE `t2` (
`a` int(11) default NULL,
KEY `a` (`a`)
) ;
insert into t2 select A.a + 10*(B.a + 10* C.a) from t1 A, t1 B, t1 C ;
insert into t1 select a from t2;
DROP TABLE IF EXISTS `t2`;
CREATE TABLE `t2` (
`a` int(11) default NULL,
`b` int(11) default NULL
)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (200),
PARTITION p1 VALUES LESS THAN (400),
PARTITION p2 VALUES LESS THAN (600),
PARTITION p3 VALUES LESS THAN (800),
PARTITION p4 VALUES LESS THAN (1001));
insert into t2 select a,1 from t1 where a < 200;
insert into t2 select a,2 from t1 where a >= 200 and a < 400;
insert into t2 select a,3 from t1 where a >= 400 and a < 600;
insert into t2 select a,4 from t1 where a >= 600 and a < 800;
insert into t2 select a,5 from t1 where a >= 800 and a < 1001;
explain partitions select * from t2;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010
explain partitions select * from t2 where a < 801 and a > 200;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p1,p2,p3,p4 ALL NULL NULL NULL NULL 800 Using where
explain partitions select * from t2 where a < 801 and a > 800;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 200 Using where
explain partitions select * from t2 where a > 600;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where a > 600 and b = 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where a > 600 and b = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where a > 600 and b = 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 400 Using where
explain partitions select * from t2 where b = 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 1010 Using where
flush status;
update t2 set b = 100 where b = 6;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 1015
flush status;
update t2 set a = 1002 where a = 1001;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 1015
flush status;
update t2 set b = 6 where a = 600;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 1015
flush status;
update t2 set b = 6 where a > 600 and a < 800;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 1015
flush status;
delete from t2 where a > 600;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 1015
DROP TABLE IF EXISTS `t2`;
CREATE TABLE `t2` (
`a` int(11) default NULL,
`b` int(11) default NULL,
index (b)
)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (200),
PARTITION p1 VALUES LESS THAN (400),
PARTITION p2 VALUES LESS THAN (600),
PARTITION p3 VALUES LESS THAN (800),
PARTITION p4 VALUES LESS THAN (1001));
insert into t2 select a,1 from t1 where a < 100;
insert into t2 select a,2 from t1 where a >= 200 and a < 300;
insert into t2 select a,3 from t1 where a >= 300 and a < 400;
insert into t2 select a,4 from t1 where a >= 400 and a < 500;
insert into t2 select a,5 from t1 where a >= 500 and a < 600;
insert into t2 select a,6 from t1 where a >= 600 and a < 700;
insert into t2 select a,7 from t1 where a >= 700 and a < 800;
insert into t2 select a,8 from t1 where a >= 800 and a < 900;
insert into t2 select a,9 from t1 where a >= 900 and a < 1001;
explain partitions select * from t2;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL NULL NULL NULL NULL 910
explain partitions select * from t2 where a = 101;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0 ALL NULL NULL NULL NULL 110 Using where
explain partitions select * from t2 where a = 550;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p2 ALL NULL NULL NULL NULL 200 Using where
explain partitions select * from t2 where a = 833;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p4 ALL NULL NULL NULL NULL 200 Using where
explain partitions select * from t2 where (a = 100 OR a = 900);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p4 ALL NULL NULL NULL NULL 310 Using where
explain partitions select * from t2 where (a > 100 AND a < 600);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3 ALL NULL NULL NULL NULL 710 Using where
explain partitions select * from t2 where b = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 Using where
explain partitions select * from t2 where b = 6;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ref b b 5 const 76 Using where
explain partitions select * from t2 where b in (1,3,5);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
explain partitions select * from t2 where b in (2,4,6);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
explain partitions select * from t2 where b in (7,8,9);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
explain partitions select * from t2 where b > 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
explain partitions select * from t2 where b > 5 and b < 8;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
explain partitions select * from t2 where b > 5 and b < 7;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 range b b 5 NULL 76 Using where
explain partitions select * from t2 where b > 0 and b < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p0,p1,p2,p3,p4 ALL b NULL NULL NULL 910 Using where
flush status;
update t2 set a = 111 where b = 10;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 0
show status like 'Handler_read_key';
Variable_name Value
Handler_read_key 5
flush status;
update t2 set a = 111 where b in (5,6);
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 915
show status like 'Handler_read_key';
Variable_name Value
Handler_read_key 0
flush status;
update t2 set a = 222 where b = 7;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 0
show status like 'Handler_read_key';
Variable_name Value
Handler_read_key 5
flush status;
delete from t2 where b = 7;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 0
show status like 'Handler_read_key';
Variable_name Value
Handler_read_key 5
flush status;
delete from t2 where b > 5;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 1215
show status like 'Handler_read_key';
Variable_name Value
Handler_read_key 0
show status like 'Handler_read_prev';
Variable_name Value
Handler_read_prev 0
show status like 'Handler_read_next';
Variable_name Value
Handler_read_next 0
flush status;
delete from t2 where b < 5 or b > 3;
show status like 'Handler_read_rnd_next';
Variable_name Value
Handler_read_rnd_next 1215
show status like 'Handler_read_key';
Variable_name Value
Handler_read_key 0
show status like 'Handler_read_prev';
Variable_name Value
Handler_read_prev 0
show status like 'Handler_read_next';
Variable_name Value
Handler_read_next 0
drop table t1, t2;
--- New file ---
+++ mysql-test/t/partition_wl2986.test 06/01/26 18:48:09
DROP TABLE IF EXISTS `t1`;
CREATE TABLE `t1` (
`a` int(11) default NULL
)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (200),
PARTITION p1 VALUES LESS THAN (400),
PARTITION p2 VALUES LESS THAN (600),
PARTITION p3 VALUES LESS THAN (800),
PARTITION p4 VALUES LESS THAN (1001));
INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
DROP TABLE IF EXISTS `t2`;
CREATE TABLE `t2` (
`a` int(11) default NULL,
KEY `a` (`a`)
) ;
insert into t2 select A.a + 10*(B.a + 10* C.a) from t1 A, t1 B, t1 C ;
insert into t1 select a from t2;
DROP TABLE IF EXISTS `t2`;
CREATE TABLE `t2` (
`a` int(11) default NULL,
`b` int(11) default NULL
)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (200),
PARTITION p1 VALUES LESS THAN (400),
PARTITION p2 VALUES LESS THAN (600),
PARTITION p3 VALUES LESS THAN (800),
PARTITION p4 VALUES LESS THAN (1001));
insert into t2 select a,1 from t1 where a < 200;
insert into t2 select a,2 from t1 where a >= 200 and a < 400;
insert into t2 select a,3 from t1 where a >= 400 and a < 600;
insert into t2 select a,4 from t1 where a >= 600 and a < 800;
insert into t2 select a,5 from t1 where a >= 800 and a < 1001;
explain partitions select * from t2;
explain partitions select * from t2 where a < 801 and a > 200;
explain partitions select * from t2 where a < 801 and a > 800;
explain partitions select * from t2 where a > 600;
explain partitions select * from t2 where a > 600 and b = 1;
explain partitions select * from t2 where a > 600 and b = 4;
explain partitions select * from t2 where a > 600 and b = 5;
explain partitions select * from t2 where b = 5;
flush status;
update t2 set b = 100 where b = 6;
show status like 'Handler_read_rnd_next';
flush status;
update t2 set a = 1002 where a = 1001;
show status like 'Handler_read_rnd_next';
flush status;
update t2 set b = 6 where a = 600;
show status like 'Handler_read_rnd_next';
flush status;
update t2 set b = 6 where a > 600 and a < 800;
show status like 'Handler_read_rnd_next';
flush status;
delete from t2 where a > 600;
show status like 'Handler_read_rnd_next';
DROP TABLE IF EXISTS `t2`;
CREATE TABLE `t2` (
`a` int(11) default NULL,
`b` int(11) default NULL,
index (b)
)
PARTITION BY RANGE (a) (
PARTITION p0 VALUES LESS THAN (200),
PARTITION p1 VALUES LESS THAN (400),
PARTITION p2 VALUES LESS THAN (600),
PARTITION p3 VALUES LESS THAN (800),
PARTITION p4 VALUES LESS THAN (1001));
insert into t2 select a,1 from t1 where a < 100;
insert into t2 select a,2 from t1 where a >= 200 and a < 300;
insert into t2 select a,3 from t1 where a >= 300 and a < 400;
insert into t2 select a,4 from t1 where a >= 400 and a < 500;
insert into t2 select a,5 from t1 where a >= 500 and a < 600;
insert into t2 select a,6 from t1 where a >= 600 and a < 700;
insert into t2 select a,7 from t1 where a >= 700 and a < 800;
insert into t2 select a,8 from t1 where a >= 800 and a < 900;
insert into t2 select a,9 from t1 where a >= 900 and a < 1001;
explain partitions select * from t2;
# not using indexes
explain partitions select * from t2 where a = 101;
explain partitions select * from t2 where a = 550;
explain partitions select * from t2 where a = 833;
explain partitions select * from t2 where (a = 100 OR a = 900);
explain partitions select * from t2 where (a > 100 AND a < 600);
explain partitions select * from t2 where b = 4;
explain partitions select * from t2 where b = 6;
explain partitions select * from t2 where b in (1,3,5);
explain partitions select * from t2 where b in (2,4,6);
explain partitions select * from t2 where b in (7,8,9);
explain partitions select * from t2 where b > 5;
explain partitions select * from t2 where b > 5 and b < 8;
explain partitions select * from t2 where b > 5 and b < 7;
explain partitions select * from t2 where b > 0 and b < 5;
flush status;
update t2 set a = 111 where b = 10;
show status like 'Handler_read_rnd_next';
show status like 'Handler_read_key';
flush status;
update t2 set a = 111 where b in (5,6);
show status like 'Handler_read_rnd_next';
show status like 'Handler_read_key';
flush status;
update t2 set a = 222 where b = 7;
show status like 'Handler_read_rnd_next';
show status like 'Handler_read_key';
flush status;
delete from t2 where b = 7;
show status like 'Handler_read_rnd_next';
show status like 'Handler_read_key';
flush status;
delete from t2 where b > 5;
show status like 'Handler_read_rnd_next';
show status like 'Handler_read_key';
show status like 'Handler_read_prev';
show status like 'Handler_read_next';
flush status;
delete from t2 where b < 5 or b > 3;
show status like 'Handler_read_rnd_next';
show status like 'Handler_read_key';
show status like 'Handler_read_prev';
show status like 'Handler_read_next';
drop table t1, t2;
--- 1.6/mysql-test/r/partition_pruning.result 2006-01-25 11:54:39 -08:00
+++ 1.7/mysql-test/r/partition_pruning.result 2006-01-26 18:48:08 -08:00
@@ -266,25 +266,25 @@
select * from t1 X, t1 Y
where X.b = Y.b and (X.a=1 or X.a=2) and (Y.a=2 or Y.a=3);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE X p1,p2 ALL a,b NULL NULL NULL 4 Using where
+1 SIMPLE X p1,p2 ALL a,b NULL NULL NULL 2 Using where
1 SIMPLE Y p2,p3 ref a,b b 4 test.X.b 2 Using where
explain partitions
select * from t1 X, t1 Y where X.a = Y.a and (X.a=1 or X.a=2);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE X p1,p2 ALL a NULL NULL NULL 4 Using where
+1 SIMPLE X p1,p2 ALL a NULL NULL NULL 2 Using where
1 SIMPLE Y p1,p2 ref a a 4 test.X.a 2
drop table t1;
create table t1 (a int) partition by hash(a) partitions 20;
insert into t1 values (1),(2),(3);
explain partitions select * from t1 where a > 1 and a < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t1 p2 system NULL NULL NULL NULL 1
explain partitions select * from t1 where a >= 1 and a < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a > 1 and a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p2,p3 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t1 p2,p3 ALL NULL NULL NULL NULL 2 Using where
explain partitions select * from t1 where a >= 1 and a <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2,p3 ALL NULL NULL NULL NULL 3 Using where
@@ -300,7 +300,7 @@
insert into t1 values (1,1),(2,2),(3,3);
explain partitions select * from t1 where b > 1 and b < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p0_sp2,p1_sp2,p2_sp2,p3_sp2 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t1 p0_sp2,p1_sp2,p2_sp2,p3_sp2 system NULL NULL NULL NULL 1
explain partitions select * from t1 where b > 1 and b < 3 and (a =1 or a =2);
id select_type table partitions type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 p1_sp2,p2_sp2 ALL NULL NULL NULL NULL 3 Using where
+1 SIMPLE t1 p1_sp2,p2_sp2 system NULL NULL NULL NULL 1
| Thread |
|---|
| • bk commit into 5.1 tree (patg:1.2077) | Patrick Galbraith | 27 Jan |
