CREATE TABLE `t` (
`col_1` varchar(255) NOT NULL DEFAULT '',
`col_2` varchar(255) NOT NULL,
`col_3` int(11) NOT NULL DEFAULT '0',
`col_4` int(11) NOT NULL DEFAULT '0'
) ENGINE=Aria TRANSACTIONAL=0 PAGE_CHECKSUM=0;
insert into t values
('foobar','qux',0,0),('abcdef','qux',0,0);
Compressing test/t.MAD: (2 records)
- Calculating statistics

normal:      0  empty-space:       0  empty-zero:         0  empty-fill:   0
pre-space:   0  end-space:         0  intervall-fields:   0  zero:         2
Original trees:  4  After join: 1
- Compressing file
Min record length:      5   Max length:      5   Mean total length:     35
99.57%     
# restart
SELECT * FROM t;
col_1	col_2	col_3	col_4
foobar	qux	0	0
abcdef	qux	0	0
DROP TABLE t;