calculating with date fields

[Sharon Ann]

Hi

I have a table called "fault". In this table I have fields called date_opened and date_closed.

I would like to select all records from "fault" whereby the time period between date_opened and date_closed is over 2 days. This is the pseudo code that I think I sort of need, but I'm not sure the correct way to write it in a php page.

Select * from fault where (date_closed - date_opened) >2;

Can anyone help?

[Sharon Ann]

I've just found this bit of SQL and am wondering whether this is what I need,

select * from fault where Datediff('date_closed','date_opened')>2;

Is this the SQL or is there another way?