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MDEV-24117: Memory management problem in statistics state for ... IN

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Part#1: Revert the patch that caused it:

commit 291be49474
Author: Igor Babaev <igor@askmonty.org>
Date:   Thu Sep 24 22:02:00 2020 -0700

    MDEV-23811: With large number of indexes optimizer chooses an inefficient plan
This commit is contained in:
Sergei Petrunia
2020-11-09 18:47:55 +03:00
parent 2845b656a3
commit f81eef62e7
5 changed files with 11 additions and 201 deletions
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42
mysql-test/t/range.test
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@ -2095,48 +2095,6 @@ set eq_range_index_dive_limit=default;
drop table t1;
--echo #
--echo # MDEV-23811: Both disjunct of WHERE condition contain range conditions
--echo # for the same index such that the second range condition
--echo # fully covers the first one. Additionally one of the disjuncts
--echo # contains a range condition for the other index.
--echo #
create table t1 (
pk int primary key auto_increment, a int, b int,
index idx1(a), index idx2(b)
);
insert into t1(a,b) values
(5,50), (1,10), (3,30), (7,70), (8,80), (4,40), (2,20), (6,60);
insert into t1(a,b) select a+10, b+100 from t1;
insert into t1(a,b) select a+20, b+200 from t1;
insert into t1(a,b) select a+30, b+300 from t1;
insert into t1(a,b) select a,b from t1;
analyze table t1;
let $q1=
select * from t1 where ((a between 3 and 4) and b < 100) or (a between 2 and 5);
eval explain $q1;
eval $q1;
let $q2=
select * from t1 where (a between 2 and 5) or ((a between 3 and 4) and b < 100);
eval explain $q2;
eval $q2;
let $q3=
select * from t1 where (a between 3 and 4) or ((a between 2 and 5) and b < 100);
eval explain $q3;
eval $q3;
let $q4=
select * from t1 where ((a between 2 and 5) and b < 100) or (a between 3 and 4);
eval explain $q4;
eval $q4;
drop table t1;
--echo #
--echo # End of 10.2 tests
--echo #