diff options
Diffstat (limited to 'mysql-test')
| -rw-r--r-- | mysql-test/r/derived_opt.result | 27 | ||||
| -rw-r--r-- | mysql-test/t/derived_opt.test | 33 |
2 files changed, 60 insertions, 0 deletions
diff --git a/mysql-test/r/derived_opt.result b/mysql-test/r/derived_opt.result index 0e8b49d5714..069b0aa65c9 100644 --- a/mysql-test/r/derived_opt.result +++ b/mysql-test/r/derived_opt.result @@ -537,4 +537,31 @@ id select_type table type possible_keys key key_len ref rows Extra 2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using temporary; Using filesort set join_cache_level=default; DROP TABLE t1,t2; +set @save_optimizer_switch= @@optimizer_switch; +set optimizer_switch="derived_merge=on"; +CREATE TABLE t1 (id int, d2 datetime, id1 int) ; +insert into t1 values (1,'2020-01-01 10:10:10',1),(2,'2020-01-01 10:10:10',2),(3,'2020-01-01 10:10:10',3); +CREATE TABLE t2 (id int, d1 datetime, id1 int) ; +insert into t2 values (1,'2020-01-01 10:10:10',1),(2,'2020-01-01 10:10:10',2),(3,'2020-01-01 10:10:10',2); +prepare stmt from " +SELECT * from + (SELECT min(d2) AS d2, min(d1) AS d1 FROM + (SELECT t1.d2 AS d2, (SELECT t2.d1 + FROM t2 WHERE t1.id1 = t2.id1 + ORDER BY t2.id DESC LIMIT 1) AS d1 + FROM t1 + ) dt2 + ) ca + ORDER BY ca.d2;"; +execute stmt; +d2 d1 +2020-01-01 10:10:10 2020-01-01 10:10:10 +execute stmt; +d2 d1 +2020-01-01 10:10:10 2020-01-01 10:10:10 +set optimizer_switch= @save_optimizer_switch; +DROP TABLE t1, t2; +# +# End of 10.3 tests +# set optimizer_switch=@exit_optimizer_switch; diff --git a/mysql-test/t/derived_opt.test b/mysql-test/t/derived_opt.test index aab95f69f26..305cac120a0 100644 --- a/mysql-test/t/derived_opt.test +++ b/mysql-test/t/derived_opt.test @@ -401,5 +401,38 @@ set join_cache_level=default; DROP TABLE t1,t2; +# +# MDEV-25182: Complex query in Store procedure corrupts results +# +set @save_optimizer_switch= @@optimizer_switch; +set optimizer_switch="derived_merge=on"; + +CREATE TABLE t1 (id int, d2 datetime, id1 int) ; +insert into t1 values (1,'2020-01-01 10:10:10',1),(2,'2020-01-01 10:10:10',2),(3,'2020-01-01 10:10:10',3); + +CREATE TABLE t2 (id int, d1 datetime, id1 int) ; +insert into t2 values (1,'2020-01-01 10:10:10',1),(2,'2020-01-01 10:10:10',2),(3,'2020-01-01 10:10:10',2); + +prepare stmt from " +SELECT * from + (SELECT min(d2) AS d2, min(d1) AS d1 FROM + (SELECT t1.d2 AS d2, (SELECT t2.d1 + FROM t2 WHERE t1.id1 = t2.id1 + ORDER BY t2.id DESC LIMIT 1) AS d1 + FROM t1 + ) dt2 + ) ca + ORDER BY ca.d2;"; + +execute stmt; +execute stmt; + +set optimizer_switch= @save_optimizer_switch; +DROP TABLE t1, t2; + +--echo # +--echo # End of 10.3 tests +--echo # + # The following command must be the last one the file set optimizer_switch=@exit_optimizer_switch; |