SQL Server Check for IsNull and for Zero

Question

I have the following:

set @SomeVariable = @AnotherVariable/isnull(@VariableEqualToZero,1) - 1 

If @VariableEqualToZero is null it substitutes t

Answer 1

You use CASE

instead of

ISNULL(@VariableEqualToZero,1)

use

CASE WHEN @VariableEqualToZero IS NULL OR @VariableEqualToZero = 0 THEN 1 ELSE @VariableEqualToZero END

COALESCE and ISNULL are essentially just shortcuts for a CASE statement. You can consult the help for the syntax of CASE.