The column type "FLOAT" seems to be flaky in MySQL 2.23.24-beta. I wouldn't mind if it
was a rounding issue but the value 666666.66 becomes 666666.69 and 777777.77 becomes
777777.75!
To reproduce the problem follow the steps below:
Step 1: Creat Table
create table TestAmt
(
id int(8) not null auto_increment
, amt_dec decimal(9,2) not null
, amt_float float(9,2) not null
, primary key (id)
)
type=MyISAM
Step 2: Insert values:
insert into TestAmt set amt_dec=111111.11,amt_float=111111.11
insert into TestAmt set amt_dec=222222.22,amt_float=222222.22
insert into TestAmt set amt_dec=333333.33,amt_float=333333.33
insert into TestAmt set amt_dec=444444.44,amt_float=444444.44
insert into TestAmt set amt_dec=555555.55,amt_float=555555.55
insert into TestAmt set amt_dec=666666.66,amt_float=666666.66
insert into TestAmt set amt_dec=777777.77,amt_float=777777.77
insert into TestAmt set amt_dec=888888.88,amt_float=888888.88
insert into TestAmt set amt_dec=999999.99,amt_float=999999.99
Step:3 Look at results:
mysql> select * from TestAmt;
+----+-----------+------------+
| id | amt_dec | amt_float |
+----+-----------+------------+
| 1 | 111111.11 | 111111.11 |
| 2 | 222222.22 | 222222.22 |
| 3 | 333333.33 | 333333.34 |
| 4 | 444444.44 | 444444.44 |
| 5 | 555555.55 | 555555.56 |
| 6 | 666666.66 | 666666.69 |
| 7 | 777777.77 | 777777.75 |
| 8 | 888888.88 | 888888.88 |
| 9 | 999999.99 | 1000000.00 |
+----+-----------+------------+
9 rows in set (0.00 sec)
