Merged fix for the bug#46051.

mysql-test/r/subselect.result

@@ -4361,6 +4361,28 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 Warnings:
 Note	1003	select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select 1 AS `1` from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (<cache>(1) = <ref_null_helper>(1))))
 DROP TABLE t1;
+#
+# Bug#45061: Incorrectly market field caused wrong result.
+#
+CREATE TABLE `C` (
+`int_nokey` int(11) NOT NULL,
+`int_key` int(11) NOT NULL,
+KEY `int_key` (`int_key`)
+);
+INSERT INTO `C` VALUES (9,9), (0,0), (8,6), (3,6), (7,6), (0,4),
+(1,7), (9,4), (0,8), (9,4), (0,7), (5,5), (0,0), (8,5), (8,7),
+(5,2), (1,8), (7,0), (0,9), (9,5);
+SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
+int_nokey	int_key
+9	9
+0	0
+5	5
+0	0
+EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	C	ALL	NULL	NULL	NULL	NULL	20	100.00	Using where
+DROP TABLE C;
+# End of test for bug#45061.
 End of 5.0 tests.
 CREATE TABLE t1 (a INT, b INT);
 INSERT INTO t1 VALUES (2,22),(1,11),(2,22);

mysql-test/t/subselect.test

@@ -3315,6 +3315,27 @@ EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
 EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
 DROP TABLE t1;
 
+--echo #
+--echo # Bug#45061: Incorrectly market field caused wrong result.
+--echo #
+CREATE TABLE `C` (
+  `int_nokey` int(11) NOT NULL,
+  `int_key` int(11) NOT NULL,
+  KEY `int_key` (`int_key`)
+);
+
+INSERT INTO `C` VALUES (9,9), (0,0), (8,6), (3,6), (7,6), (0,4),
+(1,7), (9,4), (0,8), (9,4), (0,7), (5,5), (0,0), (8,5), (8,7),
+(5,2), (1,8), (7,0), (0,9), (9,5);
+
+--disable_warnings
+SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
+EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
+--enable_warnings
+
+DROP TABLE C;
+--echo # End of test for bug#45061.
+
 --echo End of 5.0 tests.
 
 #

sql/item.cc

@@ -599,6 +599,7 @@ bool Item_ident::remove_dependence_processor(uchar * arg)
   DBUG_ENTER("Item_ident::remove_dependence_processor");
   if (depended_from == (st_select_lex *) arg)
     depended_from= 0;
+  context= &((st_select_lex *) arg)->context;
   DBUG_RETURN(0);
 }
 

sql/item_subselect.cc

@@ -1227,6 +1227,10 @@ Item_in_subselect::single_value_transformer(JOIN *join,
       else
       {
 	// it is single select without tables => possible optimization
+        // remove the dependence mark since the item is moved to upper
+        // select and is not outer anymore.
+        item->walk(&Item::remove_dependence_processor, 0,
+                           (uchar *) select_lex->outer_select());
 	item= func->create(left_expr, item);
 	// fix_field of item will be done in time of substituting
 	substitution= item;