MySQL DATE_ADD() 函数

向日期添加 10 天并返回日期：

SELECT DATE_ADD("2017-06-15", INTERVAL 10 DAY);

定义和用法

DATE_ADD() 函数将时间/日期间隔添加到日期，然后返回日期。

DATE_ADD( date, INTERVAL value addunit)

Parameter	Description
date	Required. The date to be modified
value	Required. The value of the time/date interval to add. Both positive and negative values are allowed
addunit	Required. The type of interval to add. Can be one of the following values: MICROSECOND SECOND MINUTE HOUR DAY WEEK MONTH QUARTER YEAR SECOND_MICROSECOND MINUTE_MICROSECOND MINUTE_SECOND HOUR_MICROSECOND HOUR_SECOND HOUR_MINUTE DAY_MICROSECOND DAY_SECOND DAY_MINUTE DAY_HOUR YEAR_MONTH

工作于：	从 MySQL 4.0 开始