database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

MDEV-30032: EXPLAIN FORMAT=JSON output: print costs

Browse Source 
Basic printout for join and table execution costs.
This commit is contained in:
Sergei Petrunia
2022-11-19 21:00:23 +03:00
parent 657868f5e7
commit ffe0beca25
91 changed files with 3441 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
mysql-test/main/brackets.test
View File

@ -117,24 +117,28 @@ let $q1=
select a from t1 order by a desc limit 1;
eval $q1;
eval explain extended $q1;
--source include/explain-no-costs.inc
eval explain format=json $q1;
let $q2=
(select a from t1 order by a desc) limit 1;
eval $q2;
eval explain extended $q2;
--source include/explain-no-costs.inc
eval explain format=json $q2;
let $q1=
(select a from t1 where a=20 union select a from t1) order by a desc limit 1;
eval $q1;
eval explain extended $q1;
--source include/explain-no-costs.inc
eval explain format=json $q1;
let $q2=
((select a from t1 where a=20 union select a from t1) order by a desc) limit 1;
eval $q2;
eval explain extended $q2;
--source include/explain-no-costs.inc
eval explain format=json $q2;
drop table t1;
@ -150,6 +154,7 @@ let $q=
((select * from t1 order by pk) limit 2) union (select * from t1 where pk > 4);
eval $q;
eval explain extended $q;
--source include/explain-no-costs.inc
eval explain format=json $q;
drop table t1;