Question

I have a field date_confirmed which is a datetime.

So an example of the contents would be

2011-01-03 20:54:41

The where clause I built to extract recent rows from this table based on the date_confirmed is as follows…

WHERE DATEDIFF(g.date_confirmed, CURDATE()) <= 28

I am using PHP with MySQL and I want to only extract rows where the date in date_confirmed is less than 28 days.

Can someone help me / points me in a better direction?

Thanks.

Answer 1

Well, you don’t say what’s not working, but I think you might have meant to switch the parameters around:

WHERE DATEDIFF(CURDATE(), g.date_confirmed) <= 28

as you had it, CURDATE() would (I assume) always be more recent than g.date_confirmed nd therefore DATEDIFF() would alwys return a negative number – and therefore always be <= 28