Test case backport for: Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows...

Test case backport for: Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for null-safe operator <=> NULL

mysql-test/include/icp_tests.inc

+--echo #
+--echo # Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for
+--echo #             null-safe operator <=> NULL
+--echo #
+
+CREATE TABLE t1(
+  c1 DATE NOT NULL,
+  c2 DATE NULL,
+  c3 DATETIME,
+  c4 TIMESTAMP,
+  PRIMARY KEY(c1),
+  UNIQUE(c2)
+);
+
+--echo
+INSERT INTO t1 VALUES('0000-00-00', '0000-00-00', '2008-01-04', '2008-01-05');
+INSERT INTO t1 VALUES('2007-05-25', '2007-05-25', '2007-05-26', '2007-05-26');
+INSERT INTO t1 VALUES('2008-01-01', NULL        , '2008-01-02', '2008-01-03');
+INSERT INTO t1 VALUES('2008-01-17', NULL        , NULL        , '2009-01-29');
+INSERT INTO t1 VALUES('2009-01-29', '2009-01-29', '2009-01-29', '2009-01-29');
+
+--echo
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2;
+--echo
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2 LIMIT 2;
+
+--echo
+DROP TABLE t1;
+

mysql-test/r/innodb_icp.result

+set @save_storage_engine= @@storage_engine;
+set storage_engine=InnoDB;
+#
+# Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for
+#             null-safe operator <=> NULL
+#
+CREATE TABLE t1(
+c1 DATE NOT NULL,
+c2 DATE NULL,
+c3 DATETIME,
+c4 TIMESTAMP,
+PRIMARY KEY(c1),
+UNIQUE(c2)
+);
+
+INSERT INTO t1 VALUES('0000-00-00', '0000-00-00', '2008-01-04', '2008-01-05');
+INSERT INTO t1 VALUES('2007-05-25', '2007-05-25', '2007-05-26', '2007-05-26');
+INSERT INTO t1 VALUES('2008-01-01', NULL        , '2008-01-02', '2008-01-03');
+INSERT INTO t1 VALUES('2008-01-17', NULL        , NULL        , '2009-01-29');
+INSERT INTO t1 VALUES('2009-01-29', '2009-01-29', '2009-01-29', '2009-01-29');
+
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2;
+c1	c2	c3	c4
+2008-01-01	NULL	2008-01-02 00:00:00	2008-01-03 00:00:00
+2008-01-17	NULL	NULL	2009-01-29 00:00:00
+
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2 LIMIT 2;
+c1	c2	c3	c4
+2008-01-01	NULL	2008-01-02 00:00:00	2008-01-03 00:00:00
+2008-01-17	NULL	NULL	2009-01-29 00:00:00
+
+DROP TABLE t1;
+set storage_engine= @save_storage_engine;

mysql-test/r/maria_icp.result

+set @save_storage_engine= @@storage_engine;
+set storage_engine=Maria;
+#
+# Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for
+#             null-safe operator <=> NULL
+#
+CREATE TABLE t1(
+c1 DATE NOT NULL,
+c2 DATE NULL,
+c3 DATETIME,
+c4 TIMESTAMP,
+PRIMARY KEY(c1),
+UNIQUE(c2)
+);
+
+INSERT INTO t1 VALUES('0000-00-00', '0000-00-00', '2008-01-04', '2008-01-05');
+INSERT INTO t1 VALUES('2007-05-25', '2007-05-25', '2007-05-26', '2007-05-26');
+INSERT INTO t1 VALUES('2008-01-01', NULL        , '2008-01-02', '2008-01-03');
+INSERT INTO t1 VALUES('2008-01-17', NULL        , NULL        , '2009-01-29');
+INSERT INTO t1 VALUES('2009-01-29', '2009-01-29', '2009-01-29', '2009-01-29');
+
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2;
+c1	c2	c3	c4
+2008-01-01	NULL	2008-01-02 00:00:00	2008-01-03 00:00:00
+2008-01-17	NULL	NULL	2009-01-29 00:00:00
+
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2 LIMIT 2;
+c1	c2	c3	c4
+2008-01-01	NULL	2008-01-02 00:00:00	2008-01-03 00:00:00
+2008-01-17	NULL	NULL	2009-01-29 00:00:00
+
+DROP TABLE t1;
+set storage_engine= @save_storage_engine;

mysql-test/r/myisam_icp.result

+#
+# Bug#42580 - Innodb's ORDER BY ..LIMIT returns no rows for
+#             null-safe operator <=> NULL
+#
+CREATE TABLE t1(
+c1 DATE NOT NULL,
+c2 DATE NULL,
+c3 DATETIME,
+c4 TIMESTAMP,
+PRIMARY KEY(c1),
+UNIQUE(c2)
+);
+
+INSERT INTO t1 VALUES('0000-00-00', '0000-00-00', '2008-01-04', '2008-01-05');
+INSERT INTO t1 VALUES('2007-05-25', '2007-05-25', '2007-05-26', '2007-05-26');
+INSERT INTO t1 VALUES('2008-01-01', NULL        , '2008-01-02', '2008-01-03');
+INSERT INTO t1 VALUES('2008-01-17', NULL        , NULL        , '2009-01-29');
+INSERT INTO t1 VALUES('2009-01-29', '2009-01-29', '2009-01-29', '2009-01-29');
+
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2;
+c1	c2	c3	c4
+2008-01-01	NULL	2008-01-02 00:00:00	2008-01-03 00:00:00
+2008-01-17	NULL	NULL	2009-01-29 00:00:00
+
+SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c1,c2 LIMIT 2;
+c1	c2	c3	c4
+2008-01-01	NULL	2008-01-02 00:00:00	2008-01-03 00:00:00
+2008-01-17	NULL	NULL	2009-01-29 00:00:00
+
+DROP TABLE t1;

mysql-test/t/innodb_icp.test

+#
+# ICP/InnoDB tests (Index Condition Pushdown)
+#
+
+--source include/have_innodb.inc
+
+set @save_storage_engine= @@storage_engine;
+set storage_engine=InnoDB;
+
+--source include/icp_tests.inc
+
+set storage_engine= @save_storage_engine;
+

mysql-test/t/maria_icp.test

+#
+# ICP/Maria tests (Index Condition Pushdown)
+#
+
+--source include/have_maria.inc
+
+set @save_storage_engine= @@storage_engine;
+set storage_engine=Maria;
+
+--source include/icp_tests.inc
+
+set storage_engine= @save_storage_engine;
+

mysql-test/t/myisam_icp.test

+#
+# ICP/MyISAM tests (Index Condition Pushdown)
+#
+
+--source include/icp_tests.inc
+