bk commit into 5.0 tree (evgen:1.2433)

[eugene]

Below is the list of changes that have just been committed into a local
5.0 repository of evgen. When evgen 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@stripped, 2007-03-07 22:22:19+03:00, evgen@stripped +4 -0
  Merge moonbone.local:/mnt/gentoo64/work/22331-bug-5.0-opt-mysql
  into  moonbone.local:/mnt/gentoo64/work/25373-bug-5.0-opt-mysql
  MERGE: 1.2377.27.8

  mysql-test/r/subselect.result@stripped, 2007-03-07 22:21:23+03:00, evgen@stripped +0
-0
    Auto merged
    MERGE: 1.172.1.1

  sql/sql_lex.cc@stripped, 2007-03-07 22:22:18+03:00, evgen@stripped +0 -0
    SCCS merged
    MERGE: 1.209.2.1

  sql/sql_lex.h@stripped, 2007-03-07 22:21:23+03:00, evgen@stripped +0 -0
    Auto merged
    MERGE: 1.233.4.1

  sql/sql_select.cc@stripped, 2007-03-07 22:21:23+03:00, evgen@stripped +0 -0
    Auto merged
    MERGE: 1.488.1.3

# 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:	evgen
# Host:	moonbone.local
# Root:	/mnt/gentoo64/work/25373-bug-5.0-opt-mysql/RESYNC

--- 1.213/sql/sql_lex.cc	2007-02-26 15:57:41 +03:00
+++ 1.214/sql/sql_lex.cc	2007-03-07 22:22:18 +03:00
@@ -1195,6 +1195,7 @@
   is_correlated= 0;
   cur_pos_in_select_list= UNDEF_POS;
   non_agg_fields.empty();
+  cond_value= having_value= Item::COND_UNDEF;
   inner_refs_list.empty();
 }
 

--- 1.238/sql/sql_lex.h	2007-02-26 15:57:41 +03:00
+++ 1.239/sql/sql_lex.h	2007-03-07 22:21:23 +03:00
@@ -488,6 +488,8 @@
   Item *where, *having;                         /* WHERE & HAVING clauses */
   Item *prep_where; /* saved WHERE clause for prepared statement processing */
   Item *prep_having;/* saved HAVING clause for prepared statement processing */
+  /* Saved values of the WHERE and HAVING clauses*/
+  Item::cond_result cond_value, having_value;
   /* point on lex in which it was created, used in view subquery detection */
   st_lex *parent_lex;
   enum olap_type olap;

--- 1.496/sql/sql_select.cc	2007-03-05 23:33:56 +03:00
+++ 1.497/sql/sql_select.cc	2007-03-07 22:21:23 +03:00
@@ -749,7 +749,6 @@
   }
 
   {
-    Item::cond_result having_value;
     having= optimize_cond(this, having, join_list, &having_value);
     if (thd->net.report_error)
     {
@@ -757,6 +756,10 @@
       DBUG_PRINT("error",("Error from optimize_cond"));
       DBUG_RETURN(1);
     }
+    if (select_lex->where)
+      select_lex->cond_value= cond_value;
+    if (select_lex->having)
+      select_lex->having_value= having_value;
 
     if (cond_value == Item::COND_FALSE || having_value == Item::COND_FALSE || 
         (!unit->select_limit_cnt && !(select_options &
OPTION_FOUND_ROWS)))
@@ -897,6 +900,7 @@
     conds->update_used_tables();
     DBUG_EXECUTE("where", print_where(conds, "after substitute_best_equal"););
   }
+
   /*
     Permorm the the optimization on fields evaluation mentioned above
     for all on expressions.
@@ -7606,6 +7610,9 @@
           break;
       }
     }
+    if (!((Item_cond*)cond)->argument_list()->elements)
+      cond= new Item_int(cond->val_bool());
+
   }
   else if (cond->type() == Item::FUNC_ITEM && 
            ((Item_cond*) cond)->functype() == Item_func::MULT_EQUAL_FUNC)
@@ -15324,10 +15331,13 @@
   Item *cur_where= where;
   if (join)
     cur_where= join->conds;
-  if (cur_where)
+  if (cur_where || cond_value != Item::COND_UNDEF)
   {
     str->append(STRING_WITH_LEN(" where "));
-    cur_where->print(str);
+    if (cur_where)
+      cur_where->print(str);
+    else
+      str->append(cond_value != Item::COND_FALSE ? "1" : "0");
   }
 
   // group by & olap
@@ -15353,10 +15363,13 @@
   if (join)
     cur_having= join->having;
 
-  if (cur_having)
+  if (cur_having || having_value != Item::COND_UNDEF)
   {
     str->append(STRING_WITH_LEN(" having "));
-    cur_having->print(str);
+    if (cur_having)
+      cur_having->print(str);
+    else
+      str->append(having_value != Item::COND_FALSE ? "1" : "0");
   }
 
   if (order_list.elements)

--- 1.173/mysql-test/r/subselect.result	2007-02-21 22:59:50 +03:00
+++ 1.174/mysql-test/r/subselect.result	2007-03-07 22:21:23 +03:00
@@ -421,7 +421,7 @@
 3	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
 Warnings:
-Note	1003	select 1 AS `1` from `test`.`t1`
+Note	1003	select 1 AS `1` from `test`.`t1` where 1
 drop table t1;
 CREATE TABLE `t1` (
 `numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@@ -1180,7 +1180,7 @@
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 Warnings:
-Note	1003	select <in_optimizer>(0,<exists>(select 1 AS `Not_used` from
`test`.`t1` `a`)) AS `0 IN (SELECT 1 FROM t1 a)`
+Note	1003	select <in_optimizer>(0,<exists>(select 1 AS `Not_used` from
`test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)`
 INSERT INTO t1 (pseudo) VALUES ('test1');
 SELECT 0 IN (SELECT 1 FROM t1 a);
 0 IN (SELECT 1 FROM t1 a)
@@ -1190,7 +1190,7 @@
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 Warnings:
-Note	1003	select <in_optimizer>(0,<exists>(select 1 AS `Not_used` from
`test`.`t1` `a`)) AS `0 IN (SELECT 1 FROM t1 a)`
+Note	1003	select <in_optimizer>(0,<exists>(select 1 AS `Not_used` from
`test`.`t1` `a` where 0)) AS `0 IN (SELECT 1 FROM t1 a)`
 drop table t1;
 CREATE TABLE `t1` (
 `i` int(11) NOT NULL default '0',
@@ -1532,7 +1532,7 @@
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3`
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0
 select * from t3 where NULL >= any (select b from t2 group by 1);
 a
 explain extended select * from t3 where NULL >= any (select b from t2 group by 1);
@@ -1540,7 +1540,7 @@
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3`
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0
 select * from t3 where NULL >= some (select b from t2);
 a
 explain extended select * from t3 where NULL >= some (select b from t2);
@@ -1548,7 +1548,7 @@
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3`
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0
 select * from t3 where NULL >= some (select b from t2 group by 1);
 a
 explain extended select * from t3 where NULL >= some (select b from t2 group by 1);
@@ -1556,7 +1556,7 @@
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 2	SUBQUERY	t2	system	NULL	NULL	NULL	NULL	0	const row not found
 Warnings:
-Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3`
+Note	1003	select `test`.`t3`.`a` AS `a` from `test`.`t3` where 0
 insert into t2 values (2,2), (2,1), (3,3), (3,1);
 select * from t3 where a > all (select max(b) from t2 group by a);
 a
@@ -1618,7 +1618,7 @@
 3	UNION	t1	system	NULL	NULL	NULL	NULL	1	
 NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
 Warnings:
-Note	1003	select `test`.`t1`.`s1` AS `s1` from `test`.`t1`
+Note	1003	select `test`.`t1`.`s1` AS `s1` from `test`.`t1` where 1
 drop table t1;
 CREATE TABLE t1 (number char(11) NOT NULL default '') ENGINE=MyISAM CHARSET=latin1;
 INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');