#
# Testing indexing with ALTER on inward table (in-place)
#
CREATE TABLE t1 (c INT NOT NULL, d CHAR(10) NOT NULL) ENGINE=CONNECT;
Warnings:
Warning	1105	No table_type. Will be set to DOS
Warning	1105	No file name. Table will use t1.dos
INSERT INTO t1 VALUES (1,'One'), (2,'Two'), (3,'Three');
SELECT * FROM t1;
c	d
1	One
2	Two
3	Three
CREATE INDEX xc ON t1(c);
DESCRIBE SELECT * FROM t1 WHERE c = 2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	xc	xc	4	const	1	
DROP INDEX xc ON t1;
CREATE INDEX xd ON t1(d);
DROP INDEX xd ON t1;
ALTER TABLE t1 ADD INDEX xc (c), ADD INDEX xd (d);
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
t1	1	xc	1	c	A	NULL	NULL	NULL		XINDEX		
t1	1	xd	1	d	A	NULL	NULL	NULL		XINDEX		
ALTER TABLE t1 DROP INDEX xc, DROP INDEX xd;
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
#
# Testing modifying columns inward table (not in-place)
#
ALTER TABLE t1 MODIFY COLUMN c CHAR(5) NOT NULL;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` char(5) NOT NULL,
  `d` char(10) NOT NULL
) ENGINE=CONNECT DEFAULT CHARSET=latin1
SELECT * FROM t1;
c	d
1	One
2	Two
3	Three
ALTER TABLE t1 MODIFY COLUMN c INT NOT NULL;
#
# Fails because indexing must be in-place
#
ALTER TABLE t1 MODIFY COLUMN c CHAR(10) NOT NULL, ADD INDEX xd (d);
ERROR 0A000: Alter operations not supported together by CONNECT
#
# Testing changing table type (not in-place)
#
ALTER TABLE t1 TABLE_TYPE=CSV HEADER=1 QUOTED=1;
SELECT * FROM t1;
c	d
1	One
2	Two
3	Three
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` int(11) NOT NULL,
  `d` char(10) NOT NULL
) ENGINE=CONNECT DEFAULT CHARSET=latin1 `TABLE_TYPE`=CSV `HEADER`=1 `QUOTED`=1
# create an outward table used to see the t1 file
CREATE TABLE t2 (line VARCHAR(100) NOT NULL) ENGINE=CONNECT FILE_NAME='t1.csv';
Warnings:
Warning	1105	No table_type. Will be set to DOS
SELECT * FROM t2;
line
"c","d"
1,"One"
2,"Two"
3,"Three"
#
# Testing changing engine
#
DROP TABLE t1;
CREATE TABLE t1 (c INT NOT NULL, d CHAR(10) NOT NULL) ENGINE=CONNECT;
Warnings:
Warning	1105	No table_type. Will be set to DOS
Warning	1105	No file name. Table will use t1.dos
INSERT INTO t1 VALUES (1,'One'), (2,'Two'), (3,'Three');
ALTER TABLE t1 ADD INDEX xc (c), ADD INDEX xd (d);
ALTER TABLE t1 ENGINE = MYISAM;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` int(11) NOT NULL,
  `d` char(10) NOT NULL,
  KEY `xc` (`c`),
  KEY `xd` (`d`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
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
t1	1	xc	1	c	A	NULL	NULL	NULL		BTREE		
t1	1	xd	1	d	A	NULL	NULL	NULL		BTREE		
SELECT * FROM t1;
c	d
1	One
2	Two
3	Three
ALTER TABLE t1 ENGINE = CONNECT TABLE_TYPE=DBF;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` int(11) NOT NULL,
  `d` char(10) NOT NULL,
  KEY `xc` (`c`),
  KEY `xd` (`d`)
) ENGINE=CONNECT DEFAULT CHARSET=latin1 `TABLE_TYPE`=DBF
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
t1	1	xc	1	c	A	NULL	NULL	NULL		XINDEX		
t1	1	xd	1	d	A	NULL	NULL	NULL		XINDEX		
SELECT * FROM t1;
c	d
1	One
2	Two
3	Three
DROP TABLE t1, t2;
#
# Testing ALTER on outward tables
#
CREATE TABLE t1 (c INT NOT NULL, d CHAR(10) NOT NULL) ENGINE=CONNECT TABLE_TYPE=fix FILE_NAME='tf1.txt' ENDING=1;
INSERT INTO t1 VALUES (1,'One'), (2,'Two'), (3,'Three');
SELECT * FROM t1;
c	d
1	One
2	Two
3	Three
CREATE TABLE t2 (line VARCHAR(100) NOT NULL) ENGINE=CONNECT FILE_NAME='tf1.txt';
Warnings:
Warning	1105	No table_type. Will be set to DOS
SELECT * FROM t2;
line
          1One
          2Two
          3Three
#
# Indexing works the same
#
ALTER TABLE t1 ADD INDEX xc (c), ADD INDEX xd (d);
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
t1	1	xc	1	c	A	NULL	NULL	NULL		XINDEX		
t1	1	xd	1	d	A	NULL	NULL	NULL		XINDEX		
SELECT d FROM t1 WHERE c = 2;
d
Two
ALTER TABLE t1 DROP INDEX xc, DROP INDEX xd;
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
#
# Other alterations do not modify the file
#
ALTER TABLE t1 MODIFY COLUMN c CHAR(5) NOT NULL;
Warnings:
Warning	1105	This is an outward table, table data were not modified.
SELECT * FROM t2;
line
          1One
          2Two
          3Three
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` char(5) NOT NULL,
  `d` char(10) NOT NULL
) ENGINE=CONNECT DEFAULT CHARSET=latin1 `TABLE_TYPE`=fix `FILE_NAME`='tf1.txt' `ENDING`=1
SELECT * FROM t1;
ERROR HY000: Got error 174 'File tf1.txt is not fixed length, len=66 lrecl=16' from CONNECT
ALTER TABLE t1 MODIFY COLUMN c INT NOT NULL;
Warnings:
Warning	1105	This is an outward table, table data were not modified.
#
# Changing column order
#
ALTER TABLE t1 MODIFY COLUMN c INT NOT NULL AFTER d;
Warnings:
Warning	1105	This is an outward table, table data were not modified.
SELECT * FROM t2;
line
          1One
          2Two
          3Three
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `d` char(10) NOT NULL,
  `c` int(11) NOT NULL
) ENGINE=CONNECT DEFAULT CHARSET=latin1 `TABLE_TYPE`=fix `FILE_NAME`='tf1.txt' `ENDING`=1
# Wrong result
SELECT * FROM t1;
d	c
	1
	2
	3
ALTER TABLE t1 MODIFY COLUMN c INT NOT NULL FIRST;
Warnings:
Warning	1105	This is an outward table, table data were not modified.
# What should have been done
ALTER TABLE t1 MODIFY c INT NOT NULL FLAG=0 AFTER d, MODIFY d CHAR(10) NOT NULL FLAG=11;
Warnings:
Warning	1105	This is an outward table, table data were not modified.
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `d` char(10) NOT NULL `FLAG`=11,
  `c` int(11) NOT NULL `FLAG`=0
) ENGINE=CONNECT DEFAULT CHARSET=latin1 `TABLE_TYPE`=fix `FILE_NAME`='tf1.txt' `ENDING`=1
SELECT * FROM t1;
d	c
One	1
Two	2
Three	3
#
# Changing to another engine is Ok
# However, the data file is not deleted.
#
ALTER TABLE t1 ENGINE=MARIA;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `d` char(10) NOT NULL `FLAG`=11,
  `c` int(11) NOT NULL `FLAG`=0
) ENGINE=Aria DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1 `TABLE_TYPE`=fix `FILE_NAME`='tf1.txt' `ENDING`=1
SELECT * from t1;
d	c
One	1
Two	2
Three	3
SELECT * from t2;
line
          1One
          2Two
          3Three
#
# Changing back to CONNECT fails
# Sure enough, the data file was not deleted.
#
ALTER TABLE t1 ENGINE=CONNECT;
ERROR HY000: Operation denied. Table data would be modified.
#
# But changing back to CONNECT succeed
# if the data file does not exist.
#
ALTER TABLE t1 ENGINE=CONNECT;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `d` char(10) NOT NULL `FLAG`=11,
  `c` int(11) NOT NULL `FLAG`=0
) ENGINE=CONNECT DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1 `TABLE_TYPE`=fix `FILE_NAME`='tf1.txt' `ENDING`=1
SELECT * from t1;
d	c
One	1
Two	2
Three	3
SELECT * from t2;
line
          1One
          2Two
          3Three
DROP TABLE t1, t2;