Question

I have some sql statements that calculates some numbers. It’s possible (with bonus points/penalty points) that a person could get a final score OVER 100 (with bonus points) or
UNDER 0 (with penalties).

How can i make sure that the value calculated, if it exceeds 100 it get’s maxed at 100. Alternatively, if the score ends up being below 0, then it’s min’d at 0.

I’m assuming I could use a simple UDF that does this math – that’s not hard. I’m not sure if this already exists?

I checked out CEILING and MAX and both of these are doing other things, not what I’m after.

Thoughts?

Answer 1

Tes, it would be nice if SQL Server had the ANSI-SQL “horizontal” aggregate functions, then you could do exactly what the others have suggested: “MIN(Score, 100)“, etc. Sadly, it doesn’t so you cannot do it that way.

The typical way to do this is with CASE expressions:

SELECT
    CASE WHEN Score BETWEEN 0 AND 100 THEN Score
        WHEN Score < 0 THEN 0
        ELSE 100 END as BoundScore
FROM YourTable