hugo-939487 (11/15/2010)
Another variaton, using the MONTH function:
SELECT [Month] = DATENAME(mm,SomeDateTime),Amount = SUM(SomeAmount)
FROM #MyHead
WHERE SomeDateTime >= '2010' AND SomeDateTime < '2011'
GROUP BY DATENAME(mm,SomeDateTime), MONTH(SomeDateTime)
ORDER BY MONTH(SomeDateTime)
;
This is the best one, I think. Adding MONTH function won't change the grouping as it's the same and it will still use seek. You can also use DATEPART(mm, SomeDate).