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-10683: main.order_by_optimizer_innodb fails in buildbot

Browse Source 
Fix order_by_optimizer_innodb and order_by_innodb tests.

The problem was that the query could be ran before InnoDB was
ready to provide a realistic statistic for #records in the table.

It provided a number that was too low, which caused the optimizer
to decide that range access plan wasn't advantageous and discard it.
This commit is contained in:
Sergei Petrunia
2023-10-05 16:57:52 +03:00
parent e4ce61ac0f
commit 422774b40a
4 changed files with 17 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
mysql-test/main/order_by_optimizer_innodb.test
View File

@ -33,6 +33,7 @@ select
from
t1;
analyze table t2 persistent for all;
select pk1, count(*) from t2 group by pk1;
--echo # The following should use range(ux_pk1_fd5), two key parts (key_len=5+8=13)