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Fixed LP bug #879871.

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The function add_ref_to_table_cond missed updating the value of
join_tab->pre_idx_push_select_cond after having updated the value
of join_tab->select->pre_idx_push_select_cond.
This commit is contained in:
Igor Babaev
2011-11-11 14:53:26 -08:00
parent 402258ff95
commit b91a6bd88b
5 changed files with 67 additions and 1 deletions
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20
mysql-test/include/icp_tests.inc
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@ -724,3 +724,23 @@ SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
HAVING t1.c != 5 ORDER BY t1.c;
DROP TABLE t1,t2;
--echo #
--echo # Bug#879871: InnoDB: possible ICP + GROUP BY primary index
--echo #
CREATE TABLE t1 (
a int NOT NULL, b int, c varchar(1), d varchar(1),
PRIMARY KEY (a), KEY c (c,b)
);
INSERT INTO t1 VALUES (10,8,'g','g');
SET SESSION optimizer_switch='index_condition_pushdown=off';
SELECT a FROM t1 WHERE c IS NULL AND d IS NOT NULL GROUP BY 1;
SET SESSION optimizer_switch='index_condition_pushdown=on';
SELECT a FROM t1 WHERE c IS NULL AND d IS NOT NULL GROUP BY 1;
DROP TABLE t1;