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BUG#1000269: Wrong result (extra rows) with semijoin+materialization, IN subqueries, join_cache_level>0

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- make make_cond_after_sjm() correctly handle OR clauses where one branch refers to the semi-join table
  while the other branch refers to the non-semijoin table.
This commit is contained in:
Sergey Petrunya
2012-05-18 16:24:12 +04:00
parent 6d41fa0d54
commit 02c4c5f735
3 changed files with 37 additions and 6 deletions
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13
mysql-test/t/subselect_sj_mat.test
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@ -1664,6 +1664,19 @@ EXECUTE ps;
DROP VIEW v2;
DROP TABLE t1, t2;
--echo #
--echo # BUG#1000269: Wrong result (extra rows) with semijoin+materialization, IN subqueries, join_cache_level>0
--echo #
CREATE TABLE t1 (a1 VARCHAR(1), a2 VARCHAR(1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('b','b'),('e','e');
CREATE TABLE t2 (b1 VARCHAR(1), b2 VARCHAR(1), KEY(b1)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('v','v'),('s','s'),('l','l'), ('y','y'),('c','c'),('i','i');
SELECT * FROM t1, t2 WHERE b1 IN ( SELECT b2 FROM t2 WHERE b1 > 'o' ) AND ( b1 < 'l' OR a1 IN ('b','c') );
DROP TABLE t1,t2;
--echo # This must be at the end:
set optimizer_switch=@subselect_sj_mat_tmp;
set join_cache_level=@save_join_cache_level;