Question

I need help with my query:

When I send to the query a parameter with the value -1, I would like to filter with ‘IN’ statement, otherwise filter according the value.

I was trying to do something like this:

WHERE  (StatusId = CASE WHEN @StatusId = - 1 
        THEN 
        @StatusId IN (1, 2, 3) 
        ELSE 
        StatusId = @StatusId  END)

Thanks.

Answer 1

I think you have a typo in your example, as the following:

WHEN @StatusId = - 1 THEN  @StatusId IN (1, 2, 3)  

… won’t do anything since if @StatusId = -1, it won’t be in (1, 2, 3).

Anywhos, you can just use OR and nested parentheses:

WHERE  (StatusId IN (1, 2, 3)  AND @StatusId = -1)
        OR (StatusId = @StatusId AND @StatusId <> -1)