如何在MySQL中将数字格式化为2个小数位?
您可以使用TRUNCATE()
MySQL中的函数将数字格式化为2个小数位。语法如下-
SELECT TRUNCALTE(yourColumnName,2) as anyVariableName from yourTableName;
为了理解上述语法,让我们首先创建一个表。创建表的查询如下-
mysql> create table FormatNumberTwoDecimalPlace-> (
-> Number float
-> );
使用insert命令在表中插入一些记录。查询如下-
mysql> insert into FormatNumberTwoDecimalPlace values(123.456);mysql> insert into FormatNumberTwoDecimalPlace values(1.6789);
mysql> insert into FormatNumberTwoDecimalPlace values(12.2);
mysql> insert into FormatNumberTwoDecimalPlace values(12356.23145);
mysql> insert into FormatNumberTwoDecimalPlace values(12356);
mysql> insert into FormatNumberTwoDecimalPlace values(.5678);
现在,让我们使用select命令显示表中的所有记录。查询如下-
mysql> select *from FormatNumberTwoDecimalPlace;
输出结果
+---------+| Number |
+---------+
| 123.456 |
| 1.6789 |
| 12.2 |
| 12356.2 |
| 12356 |
| 0.5678 |
+---------+
6 rows in set (0.04 sec)
这是将数字格式化为两位小数的查询-
mysql> select truncate(Number,2) as TwoValueAfterDecimal fromFormatNumberTwoDecimalPlace;
输出结果
+----------------------+| TwoValueAfterDecimal |
+----------------------+
| 123.45 |
| 1.67 |
| 12.19 |
| 12356.23 |
| 12356.00 |
| 0.56 |
+----------------------+
6 rows in set (0.00 sec)
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