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Merge branch '10.3' into 10.4

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This commit is contained in:
Sergei Golubchik
2023-01-10 21:04:17 +01:00
parent 6cb84346e1 56948ee54c
commit fdcfc25127
38 changed files with 524 additions and 116 deletions
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38
mysql-test/main/join_nested.test
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@ -1419,3 +1419,41 @@ DROP TABLE t1,t2,t3;
set join_cache_level= @save_join_cache_level;
set optimizer_switch=@save_optimizer_switch;
--echo #
--echo # MDEV-27624: Nested left joins with not_exists optimization
--echo # for most inner left join
--echo #
set @save_join_cache_level= @@join_cache_level;
CREATE TABLE t1 (a INT NOT NULL, b INT, c INT);
INSERT INTO t1 VALUES (1,1,1), (1,2,1), (1,3,1);
CREATE TABLE t2(a INT NOT NULL);
INSERT INTO t2 VALUES (1), (2);
CREATE TABLE t3(a INT not null, b INT);
INSERT INTO t3 VALUES (1, 1), (2, 1), (3, 1);
let $q=
SELECT *
FROM t1
LEFT JOIN
( t2 LEFT JOIN t3 ON t2.a = t3.b )
ON t2.a = 1 AND (t3.b = t1.a AND t3.a > t1.b OR t3.a is NULL)
WHERE t1.c = 1 AND t3.a is NULL;
set join_cache_level = 0;
eval EXPLAIN $q;
eval $q;
set join_cache_level = 2;
eval EXPLAIN $q;
eval $q;
DROP TABLE t1, t2, t3;
set join_cache_level= @save_join_cache_level;
--echo # end of 10.3 tests