what is the proper function for this

Hi,
I am unable to find the proper function to get the following.
I have 2 cells with date and time in a table. I have to check if the
combination of given date & time exists in the table before a new record is
inserted.
Any idea what function will do this?

Ashok.

On Wed, 01 Jun 2005 01:13:18 +0400, Ashok wrote:

>  I have to check if the combination of
> given date & time exists in the table before a new record is inserted.
> Any idea what function will do this?

SELECT ... WHERE ... ?

--

.