test(mtr): Add alter_table_negative.test and union.test(#497)

e4313390 · shizhao · mergify[bot] · e585b0e8 · e4313390 · e4313390
4 changed file
--- a/mysql-test/suite/tianmu/r/alter_table_negative.result
+++ b/mysql-test/suite/tianmu/r/alter_table_negative.result
+#
+# Test ALTER TABLE in various negative scenarios.
+#
+DROP DATABASE IF EXISTS alter_table_negative;
+DROP DATABASE IF EXISTS alter_table_negative1;
+CREATE DATABASE alter_table_negative;
+CREATE DATABASE alter_table_negative1;
+USE alter_table_negative;
+CREATE TABLE t1 (a INTEGER, c1 CHAR(10));
+INSERT INTO t1 VALUES (1, 'a'),(2, 'b');
+ALTER TABLE t1 ENGINE=;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
+ALTER TABLE t1 ENGINE=Invalid;
+ERROR 42000: Unknown storage engine 'Invalid'
+ALTER TABLE t1 ENGINE='#!~@$%^&*()_+-,.*`~';
+ERROR 42000: Unknown storage engine '#!~@$%^&*()_+-,.*`~'
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `c1` char(10) DEFAULT NULL
+) ENGINE=TIANMU DEFAULT CHARSET=latin1
+DROP TABLE IF EXISTS nonexisting;
+ALTER TABLE nonexisting RENAME t2;
+ERROR 42S02: Table 'alter_table_negative.nonexisting' doesn't exist
+ALTER TABLE t1 ADD COLUMN (c2 INVALIDDATATYPE);
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INVALIDDATATYPE)' at line 1
+ALTER TABLE t1 DROP COLUMN c2;
+ERROR 42000: Can't DROP 'c2'; check that column/key exists
+ALTER TABLE t1 CHANGE c2 c2 INTEGER;
+ERROR 42S22: Unknown column 'c2' in 't1'
+ALTER TABLE t1 CHANGE c1 c2 INVALIDDATATYPE;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INVALIDDATATYPE' at line 1
+DROP DATABASE alter_table_negative;
--- a/mysql-test/suite/tianmu/r/union.result
+++ b/mysql-test/suite/tianmu/r/union.result
+#
+# Test cases for UNION
+#
+DROP DATABASE IF EXISTS union_test;
+CREATE DATABASE union_test;
+USE union_test;
+#
+# UNION for INT and INT SIGNED
+#
+CREATE TABLE t1 (a INT, b INT SIGNED);
+INSERT INTO t1 VALUES (-1, 1), (-1, 1), (-2, 2);
+SELECT * FROM (SELECT * FROM t1 UNION SELECT * FROM t1) tttt ORDER BY b;
+a	b
+-1	1
+-2	2
+SELECT * FROM (SELECT a FROM t1 UNION SELECT b FROM t1) tttt ORDER BY a;
+a
+-2
+-1
+1
+2
+SELECT * FROM (SELECT b FROM t1 UNION SELECT a FROM t1) tttt ORDER BY b;
+b
+-2
+-1
+1
+2
+DROP TABLE t1;
+#
+# Multiple Columns Union
+#
+CREATE TABLE t1 (a INT, b INT, c INT);
+INSERT INTO t1 VALUES (-1, 1, 0), (-2, 2, 0), (-3, 3, 0), (-4, 4, 0), (-5, 5, 0), (-1, 1, 0), (-2, 2, 0), (-3, 3, 0), (-4, 4, 0), (-5, 5, 0);
+SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) tttt ORDER BY b;
+a	b	c
+-1	1	0
+-1	1	0
+-1	1	0
+-1	1	0
+-2	2	0
+-2	2	0
+-2	2	0
+-2	2	0
+-3	3	0
+-3	3	0
+-3	3	0
+-3	3	0
+-4	4	0
+-4	4	0
+-4	4	0
+-4	4	0
+-5	5	0
+-5	5	0
+-5	5	0
+-5	5	0
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT b FROM t1) tttt ORDER BY a;
+a
+-5
+-5
+-4
+-4
+-3
+-3
+-2
+-2
+-1
+-1
+1
+1
+2
+2
+3
+3
+4
+4
+5
+5
+SELECT * FROM (SELECT b FROM t1 UNION ALL SELECT a FROM t1) tttt ORDER BY b;
+b
+-5
+-5
+-4
+-4
+-3
+-3
+-2
+-2
+-1
+-1
+1
+1
+2
+2
+3
+3
+4
+4
+5
+5
+DROP TABLE t1;
+#
+# Same Int Type Union
+#
+CREATE TABLE t1 (a INT SIGNED, b INT SIGNED);
+INSERT INTO t1 VALUES (1, 1), (1, 1), (2, 1), (2, 1), (3, 2), (4, 2), (5, 2);
+SELECT * FROM (SELECT a FROM t1 UNION SELECT b FROM t1) tttt ORDER BY a;
+a
+1
+2
+3
+4
+5
+SELECT * FROM (SELECT b FROM t1 UNION SELECT a FROM t1) tttt ORDER BY b;
+b
+1
+2
+3
+4
+5
+SELECT * FROM (SELECT * FROM t1 UNION SELECT * FROM t1) tttt ORDER BY a;
+a	b
+1	1
+2	1
+3	2
+4	2
+5	2
+DROP TABLE t1;
+CREATE TABLE t1 (a INT, b INT);
+INSERT INTO t1 VALUES (-1, -1), (-1, -1), (2, 1), (2, 1), (3, 2), (4, 2), (5, 2);
+SELECT * FROM (SELECT a FROM t1 UNION SELECT b FROM t1) tttt ORDER BY a;
+a
+-1
+1
+2
+3
+4
+5
+SELECT * FROM (SELECT b FROM t1 UNION SELECT a FROM t1) tttt ORDER BY b;
+b
+-1
+1
+2
+3
+4
+5
+SELECT * FROM (SELECT * FROM t1 UNION SELECT * FROM t1) tttt ORDER BY a;
+a	b
+-1	-1
+2	1
+3	2
+4	2
+5	2
+DROP TABLE t1;
+#
+# Signed Int Union
+#
+CREATE TABLE t1 (a TINYINT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFFFFFFFF80 AS SIGNED)+2),(-1),(0),(1),(0x7F);
+CREATE TABLE t2 (a SMALLINT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFFFFFF8000 AS SIGNED)+2),(-1),(0),(1),(0x7FFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-32766
+-126
+-1
+-1
+0
+0
+1
+1
+127
+32767
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-32766
+-126
+-1
+-1
+0
+0
+1
+1
+127
+32767
+DROP TABLE t2;
+CREATE TABLE t2 (a MEDIUMINT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFFFF800000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-8388606
+-126
+-1
+-1
+0
+0
+1
+1
+127
+8388607
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-8388606
+-126
+-1
+-1
+0
+0
+1
+1
+127
+8388607
+DROP TABLE t2;
+CREATE TABLE t2 (a INT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-2147483646
+-126
+-1
+-1
+0
+0
+1
+1
+127
+2147483647
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-2147483646
+-126
+-1
+-1
+0
+0
+1
+1
+127
+2147483647
+DROP TABLE t2;
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-9223372036854775806
+-126
+-1
+-1
+0
+0
+1
+1
+127
+9223372036854775807
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-9223372036854775806
+-126
+-1
+-1
+0
+0
+1
+1
+127
+9223372036854775807
+DROP TABLE t1,t2;
+CREATE TABLE t1 (a SMALLINT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFFFFFF8000 AS SIGNED)+2),(-1),(0),(1),(0x7FFF);
+CREATE TABLE t2 (a MEDIUMINT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFFFF800000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-8388606
+-32766
+-1
+-1
+0
+0
+1
+1
+32767
+8388607
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-8388606
+-32766
+-1
+-1
+0
+0
+1
+1
+32767
+8388607
+DROP TABLE t2;
+CREATE TABLE t2 (a INT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-2147483646
+-32766
+-1
+-1
+0
+0
+1
+1
+32767
+2147483647
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-2147483646
+-32766
+-1
+-1
+0
+0
+1
+1
+32767
+2147483647
+DROP TABLE t2;
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-9223372036854775806
+-32766
+-1
+-1
+0
+0
+1
+1
+32767
+9223372036854775807
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-9223372036854775806
+-32766
+-1
+-1
+0
+0
+1
+1
+32767
+9223372036854775807
+DROP TABLE t1,t2;
+CREATE TABLE t1 (a MEDIUMINT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFFFF800000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFF);
+CREATE TABLE t2 (a INT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-2147483646
+-8388606
+-1
+-1
+0
+0
+1
+1
+8388607
+2147483647
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-2147483646
+-8388606
+-1
+-1
+0
+0
+1
+1
+8388607
+2147483647
+DROP TABLE t2;
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-9223372036854775806
+-8388606
+-1
+-1
+0
+0
+1
+1
+8388607
+9223372036854775807
+DROP TABLE t1,t2;
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+a
+-9223372036854775806
+-2147483646
+-1
+-1
+0
+0
+1
+1
+2147483647
+9223372036854775807
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+a
+-9223372036854775806
+-2147483646
+-1
+-1
+0
+0
+1
+1
+2147483647
+9223372036854775807
+DROP TABLE t1,t2;
+DROP DATABASE union_test;
--- a/mysql-test/suite/tianmu/t/alter_table_negative.test
+++ b/mysql-test/suite/tianmu/t/alter_table_negative.test
+--source include/have_tianmu.inc
+
+--echo #
+--echo # Test ALTER TABLE in various negative scenarios.
+--echo #
+
+--disable_warnings
+DROP DATABASE IF EXISTS alter_table_negative;
+DROP DATABASE IF EXISTS alter_table_negative1;
+--enable_warnings
+
+CREATE DATABASE alter_table_negative;
+CREATE DATABASE alter_table_negative1;
+USE alter_table_negative;
+
+# Change ENGINE
+CREATE TABLE t1 (a INTEGER, c1 CHAR(10));
+INSERT INTO t1 VALUES (1, 'a'),(2, 'b');
+--error 1064
+ALTER TABLE t1 ENGINE=;
+--error 1286
+ALTER TABLE t1 ENGINE=Invalid;
+--error 1286
+ALTER TABLE t1 ENGINE='#!~@$%^&*()_+-,.*`~';
+SHOW CREATE TABLE t1;
+
+# Rename
+--disable_warnings
+DROP TABLE IF EXISTS nonexisting;
+--enable_warnings
+--error 1146
+ALTER TABLE nonexisting RENAME t2;
+
+# Add column
+--error 1064
+ALTER TABLE t1 ADD COLUMN (c2 INVALIDDATATYPE);
+
+# Drop column
+--error 1091
+ALTER TABLE t1 DROP COLUMN c2;
+
+# Modify column
+--error 1054
+ALTER TABLE t1 CHANGE c2 c2 INTEGER;
+--error 1064
+ALTER TABLE t1 CHANGE c1 c2 INVALIDDATATYPE;
+
+DROP DATABASE alter_table_negative;
--- a/mysql-test/suite/tianmu/t/union.test
+++ b/mysql-test/suite/tianmu/t/union.test
+--source include/have_tianmu.inc
+
+--echo #
+--echo # Test cases for UNION
+--echo #
+
+--disable_warnings
+DROP DATABASE IF EXISTS union_test;
+--enable_warnings
+
+CREATE DATABASE union_test;
+USE union_test;
+
+--echo #
+--echo # UNION for INT and INT SIGNED
+--echo #
+
+CREATE TABLE t1 (a INT, b INT SIGNED);
+INSERT INTO t1 VALUES (-1, 1), (-1, 1), (-2, 2);
+SELECT * FROM (SELECT * FROM t1 UNION SELECT * FROM t1) tttt ORDER BY b;
+SELECT * FROM (SELECT a FROM t1 UNION SELECT b FROM t1) tttt ORDER BY a;
+SELECT * FROM (SELECT b FROM t1 UNION SELECT a FROM t1) tttt ORDER BY b;
+DROP TABLE t1;
+
+--echo #
+--echo # Multiple Columns Union
+--echo #
+
+CREATE TABLE t1 (a INT, b INT, c INT);
+INSERT INTO t1 VALUES (-1, 1, 0), (-2, 2, 0), (-3, 3, 0), (-4, 4, 0), (-5, 5, 0), (-1, 1, 0), (-2, 2, 0), (-3, 3, 0), (-4, 4, 0), (-5, 5, 0);
+SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t1) tttt ORDER BY b;
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT b FROM t1) tttt ORDER BY a;
+SELECT * FROM (SELECT b FROM t1 UNION ALL SELECT a FROM t1) tttt ORDER BY b;
+DROP TABLE t1;
+
+--echo #
+--echo # Same Int Type Union
+--echo #
+
+CREATE TABLE t1 (a INT SIGNED, b INT SIGNED);
+INSERT INTO t1 VALUES (1, 1), (1, 1), (2, 1), (2, 1), (3, 2), (4, 2), (5, 2);
+SELECT * FROM (SELECT a FROM t1 UNION SELECT b FROM t1) tttt ORDER BY a;
+SELECT * FROM (SELECT b FROM t1 UNION SELECT a FROM t1) tttt ORDER BY b;
+SELECT * FROM (SELECT * FROM t1 UNION SELECT * FROM t1) tttt ORDER BY a;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a INT, b INT);
+INSERT INTO t1 VALUES (-1, -1), (-1, -1), (2, 1), (2, 1), (3, 2), (4, 2), (5, 2);
+SELECT * FROM (SELECT a FROM t1 UNION SELECT b FROM t1) tttt ORDER BY a;
+SELECT * FROM (SELECT b FROM t1 UNION SELECT a FROM t1) tttt ORDER BY b;
+SELECT * FROM (SELECT * FROM t1 UNION SELECT * FROM t1) tttt ORDER BY a;
+DROP TABLE t1;
+
+--echo #
+--echo # Signed Int Union
+--echo #
+
+CREATE TABLE t1 (a TINYINT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFFFFFFFF80 AS SIGNED)+2),(-1),(0),(1),(0x7F);
+CREATE TABLE t2 (a SMALLINT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFFFFFF8000 AS SIGNED)+2),(-1),(0),(1),(0x7FFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t2;
+
+CREATE TABLE t2 (a MEDIUMINT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFFFF800000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t2;
+
+CREATE TABLE t2 (a INT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t2;
+
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t1,t2;
+
+CREATE TABLE t1 (a SMALLINT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFFFFFF8000 AS SIGNED)+2),(-1),(0),(1),(0x7FFF);
+CREATE TABLE t2 (a MEDIUMINT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFFFF800000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t2;
+
+CREATE TABLE t2 (a INT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t2;
+
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t1,t2;
+
+CREATE TABLE t1 (a MEDIUMINT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFFFF800000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFF);
+CREATE TABLE t2 (a INT);
+INSERT INTO t2 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t2;
+
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+#SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t1,t2;
+
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (CAST(0xFFFFFFFF80000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFF);
+CREATE TABLE t2 (a BIGINT);
+INSERT INTO t2 VALUES (CAST(0x8000000000000000 AS SIGNED)+2),(-1),(0),(1),(0x7FFFFFFFFFFFFFFF);
+SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT a FROM t2) tttt ORDER BY a;
+SELECT * FROM (SELECT a FROM t2 UNION ALL SELECT a FROM t1) tttt ORDER BY a;
+DROP TABLE t1,t2;
+
+DROP DATABASE union_test;