database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

MDEV-15253: Default optimizer setting changes for MariaDB 10.4

Browse Source 
use_stat_tables= PREFERABLY
optimizer_use_condition_selectivity= 4
This commit is contained in:
Varun Gupta
2018-05-31 15:51:59 +05:30
committed by Varun Gupta
parent a25ce5ab4b
commit 93c360e3a5
248 changed files with 3685 additions and 1747 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
mysql-test/main/multi_update.result
View File

@ -998,8 +998,8 @@ a b c a b c
set optimizer_switch='firstmatch=off';
explain update t1, t2 set t2.c=1 where t1.a=t2.a and t1.b in (select b from t3 where t3.c< t2.c) order by t2.c, t1.c limit 10;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 10 Using temporary; Using filesort
1 PRIMARY t1 ALL a NULL NULL NULL 10 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 10 Using where; Using temporary; Using filesort
1 PRIMARY t1 ref a a 5 test.t2.a 1
1 PRIMARY t3 ALL NULL NULL NULL NULL 10 Using where; Start temporary; End temporary
update t1, t2 set t2.c=1 where t1.a=t2.a and t1.b in (select b from t3 where t3.c<=t2.c) order by t2.c, t1.c limit 5;
select * from t2;