#
# MDEV-26137 ALTER TABLE IMPORT enhancement
#
# drop t1 before importing t2
CREATE TABLE t1 (a int) ENGINE=InnoDB;
INSERT INTO t1 VALUES(42);
FLUSH TABLES t1 FOR EXPORT;
UNLOCK TABLES;
DROP TABLE t1;
ALTER TABLE t2 IMPORT TABLESPACE;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM t2;
a
42
DROP TABLE t2;
# created t2 but did not discard tablespace
CREATE TABLE t1 (a int) ENGINE=InnoDB;
INSERT INTO t1 VALUES(42);
CREATE TABLE t2 LIKE t1;
FLUSH TABLES t1 FOR EXPORT;
UNLOCK TABLES;
DROP TABLE t1;
call mtr.add_suppression("InnoDB: Unable to import tablespace");
ALTER TABLE t2 IMPORT TABLESPACE;
ERROR HY000: Tablespace for table 'test/t2' exists. Please DISCARD the tablespace before IMPORT
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM t2;
a
DROP TABLE t2;
# attempt to import when there's no tablespace
ALTER TABLE t2 IMPORT TABLESPACE;
ERROR 42S02: Table 'test.t2' doesn't exist
# with index
CREATE TABLE t1 (a int, b varchar(50)) ENGINE=InnoDB;
CREATE UNIQUE INDEX ai ON t1 (a);
INSERT INTO t1 VALUES(42, "hello");
FLUSH TABLES t1 FOR EXPORT;
UNLOCK TABLES;
ALTER TABLE t2 IMPORT TABLESPACE;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) DEFAULT NULL,
  `b` varchar(50) DEFAULT NULL,
  UNIQUE KEY `ai` (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM t2;
a	b
42	hello
SHOW INDEX FROM t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
t1	0	ai	1	a	A	1	NULL	NULL	YES	BTREE			NO
SHOW INDEX FROM t2;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
t2	0	ai	1	a	A	1	NULL	NULL	YES	BTREE			NO
DROP TABLE t1, t2;
# with virtual column index
CREATE TABLE t1 (a int, b int as (a * a)) ENGINE=InnoDB;
CREATE UNIQUE INDEX ai ON t1 (b);
INSERT INTO t1 VALUES(42, default);
FLUSH TABLES t1 FOR EXPORT;
UNLOCK TABLES;
ALTER TABLE t2 IMPORT TABLESPACE;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) DEFAULT NULL,
  `b` int(11) GENERATED ALWAYS AS (`a` * `a`) VIRTUAL,
  UNIQUE KEY `ai` (`b`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM t2;
a	b
42	1764
SELECT b FROM t2 USE INDEX (ai);
b
1764
SHOW INDEX FROM t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
t1	0	ai	1	b	A	1	NULL	NULL	YES	BTREE			NO
SHOW INDEX FROM t2;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
t2	0	ai	1	b	A	1	NULL	NULL	YES	BTREE			NO
CHECK TABLE t2 EXTENDED;
Table	Op	Msg_type	Msg_text
test.t2	check	status	OK
DROP TABLE t1, t2;
# with auto_increment
CREATE TABLE t1 (id INT PRIMARY KEY AUTO_INCREMENT, i2 INT, i1 INT)ENGINE=INNODB;
INSERT INTO t1 (i2) SELECT 4 FROM seq_1_to_1024;
FLUSH TABLE t1 FOR EXPORT;
UNLOCK TABLES;
ALTER TABLE t2 IMPORT TABLESPACE;
CHECK TABLE t2 EXTENDED;
Table	Op	Msg_type	Msg_text
test.t2	check	status	OK
DROP TABLE t2, t1;