How to get data out of a database where the saved date is greater than another date + 1 week

Question

I wanna get all my articles out of my database where the date of the last update is greater than the publishing date + 1 week.

Do you habe an idea how that should work? In my table there is the publish_date and the update_date . Both of them contain a datetime in the following format: Ymd H:i:s

It should be something like the following (which does not work!)

SELECT * FROM foo WHERE update_date > publish_date+1week

Answer 1

SELECT * FROM foo WHERE update_date > DATE_ADD(publish_date, INTERVAL 1 WEEK)

参见MySQL DATE_ADD 。

Answer 2

如果您想保留自己的结构（即不使用DATE_ADD函数），则可以使用：

SELECT * FROM foo WHERE update_date > publish_date + INTERVAL 1 WEEK

Answer 3

You can use DATEADD() function to add weeks to DateTime in Sql Server. DATEADD() functions first parameter value can be week or wk or ww, all will return the same result.

SELECT GETDATE() 'Today', DATEADD(week,1,GETDATE())'Today + 1 Week'