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Merge the fix for bug lp:802979

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2011-07-06 17:27:38 +03:00
parent 271d9c21e6 59784abead
commit db36ce1de0
10 changed files with 115 additions and 25 deletions
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42
mysql-test/t/subselect4.test
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@@ -1419,4 +1419,46 @@ WHERE t2.f1 = (
drop table t1, t2, t3;
--echo #
--echo # LP BUG#802979 Assertion `table->key_read == 0' in close_thread_table
--echo #
CREATE TABLE t1 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t1 VALUES (1,0),(5,0);
CREATE TABLE t2 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t2 VALUES (1,0),(5,0);
CREATE TABLE t3 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t3 VALUES (1,0),(5,0);
CREATE TABLE t4 ( f1 int, f2 int , KEY (f1)) ;
INSERT IGNORE INTO t4 VALUES (1,0),(5,0);
EXPLAIN
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4))
AND t2.f2 = t1.f1;
-- error ER_SUBQUERY_NO_1_ROW
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4))
AND t2.f2 = t1.f1;
EXPLAIN
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4) LIMIT 1)
AND t2.f2 = t1.f1;
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
WHERE EXISTS (SELECT DISTINCT f1 FROM t4) LIMIT 1)
AND t2.f2 = t1.f1;
drop table t1,t2,t3,t4;
set optimizer_switch=@subselect4_tmp;