mysql金錢字段decimal

新建表decimals

CREATE TABLE `decimals` (
  `id` int(11) NOT NULL,
  `name` varchar(255) DEFAULT NULL,
  `c1` float(10,2) DEFAULT NULL,
  `c2` decimal(10,2) DEFAULT NULL,
  `c3` float(10,0) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4

插入數據

INSERT INTO decimals ( c1, c2, c3 )
VALUES
	( 1234567.23, 1234567.23, 1234567.23 )

查看結果

使用decimal可以保證數據的精度

mysql> select * from decimals;
+----+------+------------+------------+---------+
| id | name | c1         | c2         | c3      |
+----+------+------------+------------+---------+
|  1 | NULL | 1234567.25 | 1234567.23 | 1234567 |
+----+------+------------+------------+---------+