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Merge branch '10.6' into 10.11

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This commit is contained in:
Sergei Golubchik
2024-04-22 11:00:03 +02:00
parent 75488a57f2 e83d92ee5e
commit 018d537ec1
418 changed files with 7074 additions and 2930 deletions
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29
mysql-test/main/subselect4.result
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@@ -3330,4 +3330,33 @@ a
2
DEALLOCATE PREPARE stmt;
DROP TABLE t1,t2,t3;
#
# MDEV-33747: Optimization of (SELECT) IN (SELECT ...) executes subquery at prepare stage
#
create table t1 (a int, b int);
insert into t1 select seq, seq from seq_1_to_200;
create table t2 as select * from t1;
create table t3 as select * from t1;
analyze table t1,t2,t3;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
test.t2 analyze status Engine-independent statistics collected
test.t2 analyze status OK
test.t3 analyze status Engine-independent statistics collected
test.t3 analyze status OK
select @@expensive_subquery_limit < 200 as DEFAULTS_ARE_SUITABLE;
DEFAULTS_ARE_SUITABLE
1
flush status;
explain select * from t1 where a<3 or (select max(a) from t2) in (select b from t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 200 Using where
3 SUBQUERY t3 ALL NULL NULL NULL NULL 200 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 200
# Must show 0. If this shows 200, this means subquery was executed and you have a bug:
show status like 'Handler_read_rnd_next%';
Variable_name Value
Handler_read_rnd_next 0
drop table t1,t2,t3;
# End of 10.4 tests