Back-ported test cases for bugs #53060, #53305, #50358, #49453 from subquery_sj

of mysql-5.6 code line. The bugs could not be reproduced in the latest release
of mariadb-5.3 as they were fixed either when the code of subquery optimization
was back-ported from mysql-6.0 or later when some other bugs were fixed.

1 files changed, 82 insertions, 0 deletions

diff --git a/mysql-test/t/join_cache.test b/mysql-test/t/join_cache.test
index e39dcb72916..cc1941e16b9 100644
--- a/mysql-test/t/join_cache.test
+++ b/mysql-test/t/join_cache.test
@@ -3423,5 +3423,87 @@ SET optimizer_switch=@tmp_optimizer_switch;
 
 DROP TABLE t1,t2,t3,t4;
 
+--echo #
+--echo # Bug#53305 Duplicate weedout + join buffer (join cache --level=7,8)
+--echo #
+
+create table t1 (uid int, fid int, index(uid));
+insert into t1 values
+  (1,1), (1,2), (1,3), (1,4),
+  (2,5), (2,6), (2,7), (2,8),
+  (3,1), (3,2), (3,9);
+
+create table t2 (uid int primary key, name varchar(128), index(name));
+insert into t2 values 
+  (1, "A"), (2, "B"), (3, "C"), (4, "D"), (5, "E"),
+  (6, "F"), (7, "G"), (8, "H"), (9, "I");
+
+create table t3 (uid int, fid int, index(uid));
+insert into t3 values
+  (1,1), (1,2), (1,3),(1,4),
+  (2,5), (2,6), (2,7), (2,8),
+  (3,1), (3,2), (3,9);
+
+set @tmp_optimizer_switch=@@optimizer_switch;
+set  @@optimizer_switch='semijoin=on';
+set optimizer_switch='materialization=off';
+set optimizer_switch='loosescan=off,firstmatch=off';
+set optimizer_switch='mrr_sort_keys=off';
+set join_cache_level=7;
+
+create table t4 (uid int primary key, name varchar(128), index(name));
+insert into t4 values 
+  (1, "A"), (2, "B"), (3, "C"), (4, "D"), (5, "E"),
+  (6, "F"), (7, "G"), (8, "H"), (9, "I");
+
+explain select name from t2, t1 
+  where t1.uid in (select t4.uid from t4, t3 where t3.uid=1 and t4.uid=t3.fid)
+        and t2.uid=t1.fid;
+
+--sorted_result
+select name from t2, t1 
+  where t1.uid in (select t4.uid from t4, t3 where t3.uid=1 and t4.uid=t3.fid)
+        and t2.uid=t1.fid;
+
+set join_cache_level = default;
+set optimizer_switch=@tmp_optimizer_switch;
+
+drop table t1,t2,t3,t4;
+
+--echo #
+--echo # Bug#50358 - semijoin execution of subquery with outerjoin
+--echo #             emplying join buffer
+--echo #
+
+CREATE TABLE t1 (i int);
+CREATE TABLE t2 (i int);
+CREATE TABLE t3 (i int);
+INSERT INTO t1 VALUES (1), (2);
+INSERT INTO t2 VALUES (6);
+INSERT INTO t3 VALUES (1), (2);
+
+set @tmp_optimizer_switch=@@optimizer_switch;
+set  @@optimizer_switch='semijoin=on';
+set optimizer_switch='materialization=on';
+
+set join_cache_level=0;
+EXPLAIN
+SELECT * FROM t1 WHERE t1.i IN 
+                       (SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
+SELECT * FROM t1 WHERE t1.i IN 
+                       (SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
+
+set join_cache_level=2;
+EXPLAIN
+SELECT * FROM t1 WHERE t1.i IN 
+                       (SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
+SELECT * FROM t1 WHERE t1.i IN 
+                       (SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
+
+set join_cache_level = default;
+set optimizer_switch=@tmp_optimizer_switch;
+
+DROP TABLE t1,t2,t3;
+
 # this must be the last command in the file
 set @@optimizer_switch=@save_optimizer_switch;