在MySQL中使用数字舍入记录
要四舍五入，请使用MySQLROUND()。让我们首先创建一个表-
mysql> create table DemoTable -> ( -> Amount DECIMAL(10,4) -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values(100.578); mysql> insert into DemoTable values(1000.458); mysql> insert into DemoTable values(980.89);
使用select语句显示表中的所有记录-
mysql> select * from DemoTable;
+-----------+ | Amount | +-----------+ | 100.5780 | | 1000.4580 | | 980.8900 | +-----------+ 3 rows in set (0.00 sec)
这是四舍五入数字的查询-
mysql> update DemoTable set Amount=round(Amount); Rows matched: 3 Changed: 3 Warnings: 0
让我们再次检查表记录-
mysql> select * from DemoTable;
+-----------+ | Amount | +-----------+ | 101.0000 | | 1000.0000 | | 981.0000 | +-----------+ 3 rows in set (0.00 sec)