#
# Show what happens during ALTER TABLE when an existing file
# exists in the target location.
#
# Bug #19218794: IF TABLESPACE EXISTS, CAN'T CREATE TABLE,
#                BUT CAN ALTER ENGINE=INNODB
#
CREATE TABLE t1 (a SERIAL, b CHAR(10)) ENGINE=Memory;
INSERT INTO t1(b) VALUES('one'), ('two'), ('three');
#
# Create a read-only file called MYSQLD_DATADIR/test/t1.ibd
# Directory listing of test/*.ibd
#
t1.ibd
ALTER TABLE t1 ENGINE = InnoDB;
ERROR HY000: Error on rename of 'OLD_FILE_NAME' to 'NEW_FILE_NAME' (errno: 184 - Tablespace already exists)
ALTER TABLE t1 ENGINE = InnoDB;
ERROR HY000: Got error 168 - 'Unknown (generic) error from engine' from storage engine
#
# Move the file to InnoDB as t2
#
ALTER TABLE t1 RENAME TO t2, ENGINE = INNODB;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `b` char(10) DEFAULT NULL,
  UNIQUE KEY `a` (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT * from t2;
a	b
1	one
2	two
3	three
#
# Try to rename t2 to t1 with an existing read-only t1 in the way.
#
ALTER TABLE t2 RENAME TO t1;
ERROR HY000: Error on rename of 'OLD_FILE_NAME' to 'NEW_FILE_NAME' (errno: 184 - Tablespace already exists)
#
# Try again but now with a read-only 'test' directory.
#
ALTER TABLE t2 RENAME TO t1;
ERROR HY000: Error on rename of 'OLD_FILE_NAME' to 'NEW_FILE_NAME' (errno: 184 - Tablespace already exists)
#
# Create another t1, but in the system tablespace.
#
SET GLOBAL innodb_file_per_table=OFF;
CREATE TABLE t1 (a SERIAL, b CHAR(20)) ENGINE=InnoDB;
INSERT INTO t1(b) VALUES('one'), ('two'), ('three');
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `b` char(20) DEFAULT NULL,
  UNIQUE KEY `a` (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT name, space=0 FROM information_schema.innodb_tables WHERE name = 'test/t1';
name	space=0
test/t1	1
#
# Try to move t1 from the system tablespace to a file-per-table
# while a blocking read-only t1.ibd file exists.
#
# Move using innodb_file_per_table=ON
#
SET GLOBAL innodb_file_per_table=ON;
#
# Move using using innodb_file_per_table=ON and a read-only directory
#
ALTER TABLE t1 ADD COLUMN e1 INT, ALGORITHM=INPLACE;
ALTER TABLE t1 ADD COLUMN e2 INT, ALGORITHM=COPY;
#
# Move using TABLESPACE=innodb_file_per_table
#
SET GLOBAL innodb_file_per_table=OFF;
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=INPLACE;
ERROR HY000: Got error 11 - 'InnoDB error' from storage engine
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=COPY;
ERROR HY000: Got error 168 - 'Unknown (generic) error from engine' from storage engine
#
# Move using TABLESPACE=innodb_file_per_table with a read-only directory
#
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=INPLACE;
ERROR HY000: Got error 11 - 'InnoDB error' from storage engine
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=COPY;
ERROR HY000: Got error 168 - 'Unknown (generic) error from engine' from storage engine
#
# ALTER TABLE t1 from system tablespace to general tablespace
#
CREATE TABLESPACE s1 ADD DATAFILE 's1.ibd';
ALTER TABLE t1 TABLESPACE s1;
#
# Try to move t1 from a general tablespace to a file-per-table
# while a blocking read-only t1.ibd file exists.
#
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=INPLACE;
ERROR HY000: Tablespace 'test/t1' exists.
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=COPY;
ERROR HY000: Error on rename of 'OLD_FILE_NAME' to 'NEW_FILE_NAME' (errno: 184 - Tablespace already exists)
#
# Try again with a read-only 'test' directory.
#
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=INPLACE;
ERROR HY000: Got error 11 - 'InnoDB error' from storage engine
ALTER TABLE t1 TABLESPACE=innodb_file_per_table, ALGORITHM=COPY;
ERROR HY000: Got error 168 - 'Unknown (generic) error from engine' from storage engine
#
# Cleanup
#
DROP TABLE t1, t2;
DROP TABLESPACE s1;