drop table if exists t1;
create table t1 SELECT 1,"table 1";
repair table t1 use_frm;
Table	Op	Msg_type	Msg_text
test.t1	repair	warning	Number of rows changed from 0 to 1
test.t1	repair	status	OK
alter table t1 ENGINE=HEAP;
repair table t1 use_frm;
Table	Op	Msg_type	Msg_text
test.t1	repair	note	The storage engine for the table doesn't support repair
drop table t1;
create table t1(id int PRIMARY KEY, st varchar(10), KEY st_key(st));
insert into t1 values(1, "One");
alter table t1 disable keys;
show keys from t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
t1	0	PRIMARY	1	id	A	1	NULL	NULL		BTREE	
t1	1	st_key	1	st	A	NULL	NULL	NULL	YES	BTREE	disabled
repair table t1 extended;
Table	Op	Msg_type	Msg_text
test.t1	repair	status	OK
show keys from t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
t1	0	PRIMARY	1	id	A	1	NULL	NULL		BTREE	
t1	1	st_key	1	st	A	NULL	NULL	NULL	YES	BTREE	disabled
drop table t1;
repair table t1 use_frm;
Table	Op	Msg_type	Msg_text
test.t1	repair	Error	Table 'test.t1' doesn't exist
test.t1	repair	status	Operation failed
create table t1 engine=myisam SELECT 1,"table 1";
flush tables;
repair table t1;
Table	Op	Msg_type	Msg_text
test.t1	repair	Error	Incorrect file format 't1'
test.t1	repair	error	Corrupt
repair table t1 use_frm;
Table	Op	Msg_type	Msg_text
test.t1	repair	warning	Number of rows changed from 0 to 1
test.t1	repair	status	OK
drop table t1;
CREATE TABLE t1(a INT, KEY(a));
INSERT INTO t1 VALUES(1),(2),(3),(4),(5);
SET myisam_repair_threads=2;
REPAIR TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	repair	status	OK
SHOW INDEX FROM t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
t1	1	a	1	a	A	5	NULL	NULL	YES	BTREE	
SET myisam_repair_threads=@@global.myisam_repair_threads;
DROP TABLE t1;
CREATE TABLE t1(a INT);
USE mysql;
REPAIR TABLE test.t1 USE_FRM;
Table	Op	Msg_type	Msg_text
test.t1	repair	status	OK
USE test;
DROP TABLE t1;
CREATE TABLE t1(a CHAR(255), KEY(a));
SET myisam_sort_buffer_size=4096;
INSERT INTO t1 VALUES
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0');
Warnings:
Error	1034	myisam_sort_buffer_size is too small
Error	1034	Number of rows changed from 0 to 157
SET myisam_repair_threads=2;
REPAIR TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	repair	error	myisam_sort_buffer_size is too small
test.t1	repair	warning	Number of rows changed from 0 to 157
test.t1	repair	status	OK
SET myisam_repair_threads=@@global.myisam_repair_threads;
SET myisam_sort_buffer_size=@@global.myisam_sort_buffer_size;
DROP TABLE t1;
CREATE TABLE t1(a CHAR(255), KEY(a));
SET myisam_sort_buffer_size=4496;
INSERT INTO t1 VALUES
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),('0'),
('0'),('0'),('0'),('0'),('0'),('0'),('0');
SET myisam_repair_threads=2;
REPAIR TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	repair	status	OK
SET myisam_repair_threads=@@global.myisam_repair_threads;
SET myisam_sort_buffer_size=@@global.myisam_sort_buffer_size;
DROP TABLE t1;
End of 4.1 tests
# Test with a saved table from 4.1
SHOW TABLE STATUS LIKE 't1';
Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
t1	MyISAM	9	Fixed	2	5	10	21474836479	1024	0	NULL	#	#	NULL	latin1_swedish_ci	NULL		
SELECT * FROM t1;
id
1
2
# Run CHECK TABLE, it should indicate table need a REPAIR TABLE
CHECK TABLE t1 FOR UPGRADE;
Table	Op	Msg_type	Msg_text
test.t1	check	error	Table upgrade required. Please do "REPAIR TABLE `t1`" to fix it!
# REPAIR old table USE_FRM should fail
REPAIR TABLE t1 USE_FRM;
Table	Op	Msg_type	Msg_text
t1	repair	error	Failed reparing incompatible .FRM file
# Run REPAIR TABLE to upgrade .frm file
REPAIR TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	repair	status	OK
SHOW TABLE STATUS LIKE 't1';
Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
t1	MyISAM	10	Fixed	2	7	14	1970324836974591	1024	0	NULL	#	#	NULL	latin1_swedish_ci	NULL		
SELECT * FROM t1;
id
1
2
REPAIR TABLE t1 USE_FRM;
Table	Op	Msg_type	Msg_text
test.t1	repair	warning	Number of rows changed from 0 to 2
test.t1	repair	status	OK
SELECT * FROM t1;
id
1
2
DROP TABLE t1;