diff options
Diffstat (limited to 'mysql-test/main/group_min_max.result')
| -rw-r--r-- | mysql-test/main/group_min_max.result | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/mysql-test/main/group_min_max.result b/mysql-test/main/group_min_max.result index fd9b5be4260..4c2693e5e4c 100644 --- a/mysql-test/main/group_min_max.result +++ b/mysql-test/main/group_min_max.result @@ -4025,3 +4025,116 @@ drop table t1; # # End of 10.1 tests # +# +# MDEV-6768 Wrong result with agregate with join with no resultset +# +create table t1 +( +PARENT_ID int(10) unsigned NOT NULL AUTO_INCREMENT, +PARENT_FIELD VARCHAR(10), +PRIMARY KEY (PARENT_ID) +) engine=innodb; +create table t2 +( +CHILD_ID INT NOT NULL AUTO_INCREMENT, +PARENT_ID INT NOT NULL, +CHILD_FIELD varchar(10), +PRIMARY KEY (CHILD_ID) +)engine=innodb; +INSERT INTO t1 (PARENT_FIELD) +SELECT 'AAAA'; +INSERT INTO t2 (PARENT_ID, CHILD_FIELD) +SELECT 1, 'BBBB'; +explain select +t1.PARENT_ID, +min(CHILD_FIELD) +from t1 straight_join t2 +where t1.PARENT_ID = 1 +and t1.PARENT_ID = t2.PARENT_ID +and t2.CHILD_FIELD = "ZZZZ"; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 1 Using where +select +t1.PARENT_ID, +min(CHILD_FIELD) +from t1 straight_join t2 +where t1.PARENT_ID = 1 +and t1.PARENT_ID = t2.PARENT_ID +and t2.CHILD_FIELD = "ZZZZ"; +PARENT_ID min(CHILD_FIELD) +NULL NULL +select +1, +min(CHILD_FIELD) +from t1 straight_join t2 +where t1.PARENT_ID = 1 +and t1.PARENT_ID = t2.PARENT_ID +and t2.CHILD_FIELD = "ZZZZ"; +1 min(CHILD_FIELD) +1 NULL +select +IFNULL(t1.PARENT_ID,1), +min(CHILD_FIELD) +from t1 straight_join t2 +where t1.PARENT_ID = 1 +and t1.PARENT_ID = t2.PARENT_ID +and t2.CHILD_FIELD = "ZZZZ"; +IFNULL(t1.PARENT_ID,1) min(CHILD_FIELD) +1 NULL +# Check that things works with MyISAM (which has different explain) +alter table t1 engine=myisam; +alter table t2 engine=myisam; +explain select +t1.PARENT_ID, +min(CHILD_FIELD) +from t1 straight_join t2 +where t1.PARENT_ID = 1 +and t1.PARENT_ID = t2.PARENT_ID +and t2.CHILD_FIELD = "ZZZZ"; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +select +t1.PARENT_ID, +min(CHILD_FIELD) +from t1 straight_join t2 +where t1.PARENT_ID = 1 +and t1.PARENT_ID = t2.PARENT_ID +and t2.CHILD_FIELD = "ZZZZ"; +PARENT_ID min(CHILD_FIELD) +NULL NULL +drop table t1,t2; +# Check that things works if sub queries are re-executed +create table t1 (a int primary key, b int); +create table t2 (a int primary key, b int); +create table t3 (a int primary key, b int); +insert into t1 values (1,1),(2,2),(3,3); +insert into t2 values (1,1),(2,2),(3,3); +insert into t3 values (1,1),(3,3); +explain +select *, +(select +CONCAT('t2:', IFNULL(t2.a, 't2a-null'), ';', +'min_t3_b:', IFNULL(min(t3.b), 't3b-null')) +from t2,t3 +where t2.a=1 and t1.b = t3.a) as s1 +from t1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +2 DEPENDENT SUBQUERY t2 const PRIMARY PRIMARY 4 const 1 Using index +2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 +select *, +(select +CONCAT('t2:', IFNULL(t2.a, 't2a-null'), ';', +'min_t3_b:', IFNULL(min(t3.b), 't3b-null')) +from t2,t3 +where t2.a=1 and t1.b = t3.a) as s1 +from t1; +a b s1 +1 1 t2:1;min_t3_b:1 +2 2 t2:t2a-null;min_t3_b:t3b-null +3 3 t2:1;min_t3_b:3 +drop table t1,t2,t3; +# +# End of 10.4 tests +# |