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# date_sub
## description
### Syntax

`INT DATE_SUB(DATETIME date,INTERVAL expr type)`


从日期减去指定的时间间隔

date 参数是合法的日期表达式。

expr 参数是您希望添加的时间间隔。

type 参数可以是下列值：YEAR, MONTH, DAY, HOUR, MINUTE, SECOND

## example

```
mysql> select date_sub('2010-11-30 23:59:59', INTERVAL 2 DAY);
+-------------------------------------------------+
| date_sub('2010-11-30 23:59:59', INTERVAL 2 DAY) |
+-------------------------------------------------+
| 2010-11-28 23:59:59                             |
+-------------------------------------------------+
```

##keyword

    DATE_SUB,DATE,SUB