EVOLUTION-MANAGER

Edit File: bug49129.result

SET SESSION optimizer_switch = 'firstmatch=off,index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,loosescan=on,materialization=on,semijoin=on'; CREATE TABLE t0 (a INT); INSERT INTO t0 VALUES (0),(1),(2),(3),(4); CREATE TABLE t1 (a INT, b INT, KEY(a)); INSERT INTO t1 SELECT a, a from t0; CREATE TABLE t2 (a INT, b INT, PRIMARY KEY(a)); INSERT INTO t2 SELECT * FROM t1; UPDATE t1 SET a=3, b=11 WHERE a=4; UPDATE t2 SET b=11 WHERE a=3; # This result is wrong, but will be fixed by Bug#46556 SELECT * FROM t0 WHERE t0.a IN (SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b); a 0 1 2 3 SET join_cache_level = 6; # This result is even more wrong ;-) SELECT * FROM t0 WHERE t0.a IN (SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b); a 0 1 2 3 SET SESSION optimizer_switch = 'semijoin=off'; # This result is correct SELECT * FROM t0 WHERE t0.a IN (SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b); a 0 1 2 3 DROP TABLE t0, t1, t2;