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

Merge commit '10.4' into 10.5

This commit is contained in:
Oleksandr Byelkin
2021-01-06 10:53:00 +01:00
160 changed files with 2757 additions and 1356 deletions

View File

@ -0,0 +1,37 @@
drop table if exists t1,t2;
#
# MDEV-21958: Query having many NOT-IN clauses running forever
#
create table t2 (
pk int primary key,
key1 int,
col1 int,
key (key1, pk)
);
insert into t2 (pk, key1) values (1,1),(2,2),(3,3),(4,4),(5,5);
set @tmp_21958=@@optimizer_trace;
set optimizer_trace=1;
explain select * from t2 where key1 in (1,2,3) and pk not in (1,2,3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range PRIMARY,key1 key1 5 NULL 3 Using index condition
# This should show only ranges in form "(1) <= (key1) <= (1)"
# ranges over "pk" should not be constructed.
select json_detailed(JSON_EXTRACT(trace, '$**.ranges'))
from information_schema.optimizer_trace;
json_detailed(JSON_EXTRACT(trace, '$**.ranges'))
[
[
"(1) <= (key1) <= (1)",
"(2) <= (key1) <= (2)",
"(3) <= (key1) <= (3)"
],
[
"(1) <= (key1) <= (1)",
"(2) <= (key1) <= (2)",
"(3) <= (key1) <= (3)"
]
]
set optimizer_trace=@tmp_21958;
drop table t2;