TSQL retrieve all records in current month/year

Question

I have a datetime field called DateFinished. I need to be able to retrieve all records in which DateFinished is within the current month/year.

Answer 1

If you've only got a small number of rows, this will do to get all rows where DateFinished is in this month of this year.

SELECT * 
FROM MyTable
WHERE Year(DateFinished) = Year(CURRENT_TIMESTAMP) 
                 AND Month(DateFinished) = Month(CURRENT_TIMESTAMP)

This could get quite slow over a large number of rows though - in which case using DateAdd, DatePart and BETWEEN is probably more appropriate, and can take advantage of indexes (I don't have time to write an answer involving those right now!)