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

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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
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2
mysql-test/main/subselect_cache.test
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@ -34,8 +34,10 @@ select a, (select d from t2 where b=c) from t1;
--source include/analyze-format.inc
analyze format=json
select a, (select d from t2 where b=c), (select d from t2 where b=c union select 1 order by 1 limit 1) from t1;
--source include/explain-no-costs.inc
explain format=json
select a, (select d from t2 where b=c) from t1;
--source include/explain-no-costs.inc
explain format=json
select a, (select d from t2 where b=c), (select d from t2 where b=c union select 1 order by 1 limit 1) from t1;
set optimizer_switch='subquery_cache=off';