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Diffstat (limited to 'mysql-test/t/selectivity.test')
| -rw-r--r-- | mysql-test/t/selectivity.test | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/mysql-test/t/selectivity.test b/mysql-test/t/selectivity.test index afaa937c360..557a4e92bca 100644 --- a/mysql-test/t/selectivity.test +++ b/mysql-test/t/selectivity.test @@ -1064,3 +1064,39 @@ drop table t1,t0; set histogram_size=@save_histogram_size; set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; set use_stat_tables=@save_use_stat_tables; + +--echo # +--echo # MDEV-15306: Wrong/Unexpected result with the value +--echo # optimizer_use_condition_selectivity set to 4 +--echo # + +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); + +delimiter |; +CREATE FUNCTION f1() RETURNS INT DETERMINISTIC +BEGIN + SET @cnt := @cnt + 1; + RETURN 1; +END;| +delimiter ;| +set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity; +set @save_use_stat_tables= @@use_stat_tables; +set @@use_stat_tables='complementary'; +set @@optimizer_use_condition_selectivity=4; +SET @cnt= 0; +SELECT * FROM t1 WHERE a = f1(); +SELECT @cnt; + +set @@use_stat_tables='preferably'; +analyze table t1 persistent for all; +SET @cnt := 0; +set @@optimizer_use_condition_selectivity=4; +SELECT * FROM t1 WHERE a = f1(); +SELECT @cnt; +alter table t1 force; +set @@use_stat_tables= @save_use_stat_tables; +set @@optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; +drop table t1; +drop function f1; + |