How to delete SQL tables older than 4days by publishing date

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I am designing an aggregator that stores published posts by members. But the posts older than 7 days must be deleted automatically or with cron.
Can any one give idea?

What I have tried:

this is designed in gregarius to I tried a plugin of gregarius

Posted 16-Nov-16 20:07pm

Jayati Creative

Updated 17-Nov-16 17:33pm

Nelek

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Mehdi Gholam 17-Nov-16 2:22am

... and what have you tried?

2 solutions

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Ankur^\m/ · Answer 1 · 2016-11-17T01:58:00

Solution 1

1. Create an SQL script that deletes the records older than 4 days. Something like:

SQL

DELETE FROM table_name WHERE date_column < DateAdd(day, -4, GetDate())

2. Create an SQL job[^] which run this script at a scheduled time everyday.

Also you might want to ARCHIVE the data instead of deleting it unless it is absolutely useless.

Posted 17-Nov-16 1:58am

Ankur^\m/

Updated 6-Dec-16 4:04am

v2

Comments

Richard Deeming 17-Nov-16 9:43am

It would be better to use DateAdd[^] for the date calculation, rather than subtracting an integer:
... WHERE date_column < DateAdd(day, -4, GetDate())

Date arithmetic only works with the older datetime / smalldatetime types.

Ankur^\m/ 6-Dec-16 10:15am

You are absolutely correct! I mostly work with datetime datatype so have a habit of using it like this. I shall change that from now onwards. And I have also updated my solution. Thank you!

Daniel Jones · Answer 2 · 2016-11-17T17:33:00

Solution 2

You can also build a DELETE statement via datediff and getdate functions.

SQL

DELETE FROM TableName WHERE DATEDIFF(day,getdate(),thatColumn) < -4

Posted 17-Nov-16 17:33pm

Daniel Jones

Updated 17-Nov-16 17:34pm