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Merge branch '10.3' into 10.4

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Oleksandr Byelkin
2022-01-30 09:46:52 +01:00
parent 12cad0c346 41a163ac5c
commit a576a1cea5
440 changed files with 7883 additions and 3481 deletions
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44
mysql-test/main/derived_split_innodb.result
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@ -239,4 +239,48 @@ drop table t1,t2,t3;
set optimizer_switch='split_materialized=default';
set use_stat_tables=default;
set optimizer_use_condition_selectivity=default;
#
# MDEV-26337: subquery with groupby and ROLLUP returns incorrect results
# (The testcase is taken from testcase for MDEV-13389 due to it being
# much smaller)
#
create table t3 (a int, b int, c char(127), index idx_b(b)) engine=myisam;
insert into t3 values
(8,11,'aa'), (5,15,'cc'), (1,14,'bb'), (2,12,'aa'), (7,17,'cc'),
(7,18,'aa'), (2,11,'aa'), (7,10,'bb'), (3,11,'dd'), (4,12,'ee'),
(5,14,'dd'), (9,12,'ee');
create table t4 (a int, b int, c char(127), index idx(a,c)) engine=myisam;
insert into t4 values
(7,10,'cc'), (1,20,'aa'), (2,23,'bb'), (7,18,'cc'), (1,30,'bb'),
(4,71,'xx'), (3,15,'aa'), (7,82,'aa'), (8,12,'dd'), (4,15,'aa'),
(11,33,'yy'), (10,42,'zz'), (4,53,'xx'), (10,17,'yy'), (7,12,'cc'),
(8,20,'dd'), (7,32,'bb'), (1,50,'aa'), (3,40,'bb'), (3,77,'aa');
insert into t4 select a+10, b+10, concat(c,'f') from t4;
analyze table t3,t4;
Table Op Msg_type Msg_text
test.t3 analyze status Engine-independent statistics collected
test.t3 analyze status OK
test.t4 analyze status Engine-independent statistics collected
test.t4 analyze status OK
# This should use a plan with LATERAL DERIVED:
explain select t3.a,t3.c,t.max,t.min
from t3 join
(select a, c, max(b) max, min(b) min from t4 group by a,c) t
on t3.a=t.a and t3.c=t.c
where t3.b > 15;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 range idx_b idx_b 5 NULL 2 Using index condition; Using where
1 PRIMARY <derived2> ref key0 key0 133 test.t3.a,test.t3.c 2
2 LATERAL DERIVED t4 ref idx idx 133 test.t3.a,test.t3.c 1
# ... and if one adds WITH ROLLUP, then LATERAL DERIVED is no longer used:
explain select t3.a,t3.c,t.max,t.min
from t3 join
(select a, c, max(b) max, min(b) min from t4 group by a,c with rollup) t
on t3.a=t.a and t3.c=t.c
where t3.b > 15;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 range idx_b idx_b 5 NULL 2 Using index condition; Using where
1 PRIMARY <derived2> ref key0 key0 133 test.t3.a,test.t3.c 4
2 DERIVED t4 ALL NULL NULL NULL NULL 40 Using filesort
drop table t3, t4;
# End of 10.3 tests