Question

I have a column with week number and a column with year number. I want to search into database for a time interval, for example:

If I want to search between a week from this year, and a week from the next year, what query should I use?

If the year was the same that would be easy and my query will look like:

Select *
From mytable
Where (Finish_Week BETWEEN @Finish_Week1 AND @Finish_Week2) 
       AND (Finish_Year = @Finish_Year)

Answer 1

Simple answer:

SELECT * 
FROM   MYTABLE 
WHERE  ( FINISH_WEEK >= @Finish_Week1 
         AND FINISH_YEAR = @Finish_Year - 1 ) 
        OR ( FINISH_WEEK <= @Finish_Week2 
             AND FINISH_YEAR = @Finish_Year ) 

This solution assumes @Finish_Year is the second year.

Short explanation:

• First condition – if the year is the first year (@Finish_Year – 1) and the week is above or equal to the week in the first year.
• Second Condition – if the year is the second year (@Finish_Year) and the week is before or equal to the week in the second year.