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

There is the COALESCE expression (although not function https://msdn.microsoft.com/en-us/library/ms190349.aspx) test the arguments in order and keep doing it until finds the value not NULL and returns it.

example usage:
SELECT COALESCE(NULL, NULL, 5)--returns 5

In your case :
COALESCE(a.PolicySignedDateTime,aq.Amount) AS 'Signed Premium',