Is there a opposite function to ISNULL in sql server? To do Is not null?

Question

I have this code in my select statement

ISNULL(a.PolicySignedDateTime,aq.Amount) AS \'Signed Premium\',

But I want to see if \"a.PolicySign

Answer 1

You have to use CASE

SELECT CASE WHEN Field IS NOT NULL
    THEN 'something'
    ELSE 'something else'
END