bk commit into 5.1 tree (igor:1.2216)

[igor]

Below is the list of changes that have just been committed into a local
5.1 repository of igor. When igor does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
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ChangeSet
  1.2216 06/03/24 12:46:33 igor@stripped +2 -0
  Merge rurik.mysql.com:/home/igor/dev/mysql-5.0-0
  into  rurik.mysql.com:/home/igor/dev/mysql-5.1-0

  sql/item_cmpfunc.cc
    1.198 06/03/24 12:46:26 igor@stripped +0 -0
    Auto merged

  mysql-test/r/join_outer.result
    1.47 06/03/24 12:46:26 igor@stripped +0 -0
    Auto merged

# 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:	igor
# Host:	rurik.mysql.com
# Root:	/home/igor/dev/mysql-5.1-0/RESYNC

--- 1.197/sql/item_cmpfunc.cc	2006-03-09 11:55:25 -08:00
+++ 1.198/sql/item_cmpfunc.cc	2006-03-24 12:46:26 -08:00
@@ -2563,10 +2563,13 @@
 	(item= *li.ref())->check_cols(1))
       return TRUE; /* purecov: inspected */
     used_tables_cache|=     item->used_tables();
-    tmp_table_map=	    item->not_null_tables();
-    not_null_tables_cache|= tmp_table_map;
-    and_tables_cache&=      tmp_table_map;
-    const_item_cache&=      item->const_item();
+    if (!item->const_item())
+    {
+      tmp_table_map= item->not_null_tables();
+      not_null_tables_cache|= tmp_table_map;
+      and_tables_cache&= tmp_table_map;
+      const_item_cache= FALSE;
+    }  
     with_sum_func=	    with_sum_func || item->with_sum_func;
     if (item->maybe_null)
       maybe_null=1;

--- 1.46/mysql-test/r/join_outer.result	2006-02-10 10:34:30 -08:00
+++ 1.47/mysql-test/r/join_outer.result	2006-03-24 12:46:26 -08:00
@@ -1135,3 +1135,22 @@
 1	SIMPLE	t2	ALL	PRIMARY	NULL	NULL	NULL	4	Using where
 1	SIMPLE	t1	eq_ref	PRIMARY	PRIMARY	4	test.t2.a	1	
 DROP TABLE t1,t2;
+CREATE TABLE t1 (id int(11) NOT NULL PRIMARY KEY, name varchar(20),
+INDEX (name)) ENGINE=InnoDB;
+CREATE TABLE t2 (id int(11) NOT NULL PRIMARY KEY, fkey int(11),
+FOREIGN KEY (fkey) REFERENCES t2(id)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (1,'A1'),(2,'A2'),(3,'B');
+INSERT INTO t2 VALUES (1,1),(2,2),(3,2),(4,3),(5,3);
+EXPLAIN
+SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id 
+WHERE t1.name LIKE 'A%';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index	PRIMARY,name	name	23	NULL	3	Using where; Using index
+1	SIMPLE	t2	ref	fkey	fkey	5	test.t1.id	1	Using where; Using index
+EXPLAIN
+SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id 
+WHERE t1.name LIKE 'A%' OR FALSE;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index	PRIMARY,name	name	23	NULL	3	Using where; Using index
+1	SIMPLE	t2	ref	fkey	fkey	5	test.t1.id	1	Using where; Using index
+DROP TABLE t1,t2;