database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

MDEV-30964: MAX_SEL_ARG memory exhaustion is not visible in the optimizer trace

Browse Source 
Add printing
This commit is contained in:
Sergei Petrunia
2023-03-29 19:42:21 +03:00
parent 2165c30486
commit f5dceafd0b
3 changed files with 81 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
mysql-test/main/opt_trace.test
View File

@ -677,6 +677,39 @@ INSERT INTO t1 VALUES (0,0);
SELECT a FROM t1 WHERE (a,b) in (SELECT @c,@d);
DROP TABLE t1;
--echo #
--echo # MDEV-30964: MAX_SEL_ARG memory exhaustion is not visible in the optimizer trace
--echo #
create table t1 (
c1 int,
c2 int,
c3 int,
c4 int,
c5 int,
c6 int,
c7 int,
c8 int,
key(c1,c2,c3,c4,c5,c6,c7,c8)
);
insert into t1 () values (),(),();
explain select *
from t1
where
(c1 in (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16) and c2=1) and
c3 in (1,2,3,4,5,6,7,8,9,10) and
c4 in (1,2,3,4,5,6,7,8,9,10) and
c5 in (1,2,3,4,5,6,7,8,9,10) and
c6 in (1,2,3,4);
select
json_detailed(json_extract(trace, '$**.setup_range_conditions'))
from
information_schema.optimizer_trace;
drop table t1;
--echo #
--echo # MDEV-31085: multi-update using view with optimizer trace enabled
--echo #