计算2个日期之间的时差(以分钟为单位)

问题描述：

我的MySQL数据库中有一个时间字段Timestamp，它映射到bean中的DATE数据类型.现在，我想要一个查询，通过该查询可以获取数据库中的所有记录，这些记录的当前时间戳与存储在数据库中的时间戳之间的差异大于20分钟.

I have a field of time Timestamp in my MySQL database which is mapped to a DATE datatype in my bean. Now I want a query by which I can fetch all records in the database for which the difference between the current timestamp and the one stored in the database is > 20 minutes.

我该怎么办?

我想要的是:

SELECT * FROM MyTab T WHERE T.runTime - now > 20 minutes

是否有用于此的MySQL函数，或以任何方式在SQL中做到这一点?

Are there any MySQL functions for this, or any way to do this in SQL?

答

我认为您可以使用

I think you could use TIMESTAMPDIFF(unit,datetime_expr1,datetime_expr2) something like

select * from MyTab T where
TIMESTAMPDIFF(MINUTE,T.runTime,NOW()) > 20

计算2个日期之间的时差(以分钟为单位)

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