diff options
Diffstat (limited to 'mysql-test/t/select.test')
| -rw-r--r-- | mysql-test/t/select.test | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test index 033350d138a..4b6ae921b9b 100644 --- a/mysql-test/t/select.test +++ b/mysql-test/t/select.test @@ -2899,3 +2899,24 @@ select 'In next EXPLAIN, B.rows must be exactly 10:' Z; explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5 and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5); drop table t1, t2; + +# +#Bug #18940: selection of optimal execution plan caused by equality +# propagation (the bug was fixed by the patch for bug #17379) + +CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b)); +INSERT INTO t1 VALUES (1, 3), (9,4), (7,5), (4,5), (6,2), + (3,1), (5,1), (8,9), (2,2), (0,9); + +CREATE TABLE t2 (c int, d int, f int, INDEX(c,f)); +INSERT INTO t2 VALUES + (1,0,0), (1,0,1), (2,0,0), (2,0,1), (3,0,0), (4,0,1), + (5,0,0), (5,0,1), (6,0,0), (0,0,1), (7,0,0), (7,0,1), + (0,0,0), (0,0,1), (8,0,0), (8,0,1), (9,0,0), (9,0,1); + +EXPLAIN +SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6; +EXPLAIN +SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0; + +DROP TABLE t1, t2; |