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

It seems to me this would be an easy way to get the opposite.

SELECT (1-ISNULL(field));

Will give you 1 if NOT NULL and 0 if NULL instead of the 1 for NULL and 0 for NOT NULL