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Merge branch '10.3' into 10.4

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Oleksandr Byelkin
2019-06-14 22:10:50 +02:00
parent 772c5f3c78 1135244a64
commit f66d1850ac
86 changed files with 2305 additions and 2514 deletions
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34
mysql-test/main/join_nested.test
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@ -1380,3 +1380,37 @@ DROP VIEW v1;
DROP TABLE t1,t2;
set optimizer_search_depth= @tmp_mdev621;
--echo #
--echo # MDEV-19588: Nested left joins using optimized join cache
--echo #
set optimizer_switch='optimize_join_buffer_size=on';
set @save_join_cache_level= @@join_cache_level;
set join_cache_level=2;
CREATE TABLE t1 (i1 int, c1 varchar(20), pk int) engine=myisam;
CREATE TABLE t2 (pk int, c1 varchar(20), i1 int) engine=myisam;
INSERT INTO t2 VALUES (7,'a',-912),(8,'a',5);
CREATE TABLE t3 (pk int, c1 varchar(20), i1 int) engine=myisam;
INSERT INTO t3 VALUES
(1,'a',-145),(2,'a',6),(3,'a',1),(7,'a',NULL),(8,'a',889),(9,'a',146),
(10,'a',177),(16,'a',-433),(17,'a',NULL),(18,'a',2),(19,'a',3),(20,'a',5),
(21,'a',-484),(22,'a',369),(23,'a',-192),(24,'a',-163),(25,'a',5),(26,'a',NULL);
let $q=
SELECT t3.*
FROM t3 LEFT JOIN t1 LEFT JOIN t2 ON t1.i1 = t2.i1 ON t3.i1 = t1.i1
WHERE t2.pk < 13 OR t3.i1 IS NULL;
eval $q;
eval explain extended $q;
DROP TABLE t1,t2,t3;
set join_cache_level= @save_join_cache_level;
set optimizer_switch=@save_optimizer_switch;