【SQL的学习笔记】DATEDIFF函数：日期计算之相差天数计算

原創 shenjie_xsj 2020-06-18 23:17

调用方式

说明：本笔记仅适用于SQL Server数据库
DATEDIFF(参数一,参数二,参数三)

传入参数

参数一：指定求差类型，当传入DAY时，返回结果代表相差的天数
参数二：两个日期值中的较大值
参数三：两个日期值中的较小值

返回值

返回指定求差类型的差值

调用示例

-- 返回当前日期与表Table1所存储的CreateTime之间相差的天数
DATEDIFF(DAY,GETDATE(),Table1.CreateTime)
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