Question

I am trying to work out a query where the query will perform a count (total) on a specific column. If the count is greater than 0, I want to display YES and display NO if the returned count is zero.

So, if I a query as this:

SELECT COUNT(ProblemID)
FROM dbo.ProblemInfo
WHERE (ProblemID IN (100,101,309,305,205,600,500)) AND (DEPID = '10866')

that will actually be a subquery, how do I get the subquery to display “YES” when the returned count is greater than 0 and NO if the count is 0?

I appreciate any insight and help.

Answer 1

Here’s an alternate way of querying that.

IF EXISTS(
            SELECT *
            FROM dbo.ProblemInfo
            WHERE (ProblemID IN (100,101,309,305,205,600,500))
            AND (DEPID = '10866')
        )
    BEGIN
        SELECT 'Yes'
    END
ELSE
    BEGIN
        SELECT 'No'
    END

What I like about this method is that, for enormous data-sets, it should be noticeably faster.