Create 'main' test directory and move 't' and 'r' there

mysql-test/main/order_by_innodb.test

@@ -0,0 +1,110 @@
+#
+# ORDER BY handling (e.g. filesort) tests that require innodb
+#
+-- source include/have_innodb.inc
+
+--disable_warnings
+drop table if exists t0,t1,t2,t3;
+--enable_warnings
+
+--echo #
+--echo # MDEV-6434: Wrong result (extra rows) with ORDER BY, multiple-column index, InnoDB
+--echo #
+
+CREATE TABLE t1 (a INT, b INT, c INT, d TEXT, KEY idx(a,b,c)) ENGINE=InnoDB;
+
+INSERT INTO t1 (a,c) VALUES
+(8, 9),(8, 10),(13, 15),(16, 17),(16, 18),(16, 19),(20, 21),
+(20, 22),(20, 24),(20, 25),(20, 26),(20, 27),(20, 28);
+
+SELECT  * FROM t1 WHERE a = 8 AND (b = 1 OR b IS NULL) ORDER BY c;
+
+DROP TABLE t1;
+
+--echo #
+--echo # MDEV-9457: Poor query plan chosen for ORDER BY query by a recent 10.1
+--echo #
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t1 (
+  pk int primary key,
+  key1 int,
+  key2 int,
+  col1 char(255),
+  key(key1),
+  key(key2)
+) engine=innodb;
+
+set @a=-1;
+insert into t1 
+select 
+  @a:=@a+1, 
+  @a, 
+  @a, 
+  repeat('abcd', 63) 
+from t0 A, t0 B, t0 C, t0 D;
+
+--echo # The following must NOT use 'index' on PK. 
+--echo # It should use index_merge(key1,key2) + filesort
+--replace_column 9 #
+explain 
+select * 
+from t1
+where key1<3 or key2<3
+order by pk;
+
+--replace_column 9 #
+explain 
+select * 
+from t1
+where key1<3 or key2<3;
+
+drop table t0, t1;
+
+--echo #
+--echo # MDEV-14071: wrong results with orderby_uses_equalities=on
+--echo # (duplicate of MDEV-13994)
+--echo #
+
+CREATE TABLE t1 (i int, j int, z int,PRIMARY KEY (i,j), KEY (z)) ENGINE=InnoDB;
+CREATE TABLE t2 (i int, j int, PRIMARY KEY (i,j)) ENGINE=InnoDB;
+CREATE TABLE t3 (j int, n varchar(5), PRIMARY KEY (j)) ENGINE=InnoDB;
+
+INSERT INTO t1 VALUES
+  (127,0,1),(188,0,1),(206,0,1),(218,0,1),(292,0,1),(338,0,1),(375,0,1),
+  (381,0,1),(409,0,1),(466,0,1),(469,0,1),(498,0,1),(656,0,1);
+INSERT INTO t1 VALUES
+  (77,4,0),(86,7,0),(96,6,0),(96,7,0),(99,9,0),(99,10,0),(99,11,0),(104,4,0),
+  (106,5,0),(148,6,0),(177,6,0),(181,5,0),(188,8,0),(218,8,0),(253,7,0),
+  (268,4,0),(338,4,0),(409,7,0),(466,8,0),(469,8,0),(498,8,0),(656,8,0);
+
+INSERT INTO t2 VALUES
+  (127,7),(188,8),(188,9),(206,6),(218,8),(218,9),(292,7),(338,4),(338,5),
+  (375,6),(381,5),(409,7),(409,8),(466,8),(466,9),(469,8),(469,9),(498,8),
+  (498,9),(656,8),(656,9);
+INSERT INTO t3 VALUES
+  (4,'four'),(5,'five'),(6,'six'),(7,'seven'),(8,'eight'),(9,'nine');
+
+let $q1=
+SELECT i,n
+FROM t1 INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
+WHERE i IN (SELECT i FROM t1 WHERE z=1) AND z=0 ORDER BY i;
+let $q2=
+SELECT i,n
+FROM t1 x INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
+WHERE EXISTS (SELECT * FROM t1 WHERE i=x.i AND z=1) AND z=0 ORDER BY i;
+
+SET @save_optimizer_switch=@@optimizer_switch;
+
+SET optimizer_switch='orderby_uses_equalities=off';
+eval $q1;
+eval $q2;
+
+SET optimizer_switch='orderby_uses_equalities=on';
+eval $q1;
+eval $q2;
+
+set optimizer_switch= @save_optimizer_switch;
+
+DROP TABLE t1,t2,t3;