T-SQL: Formula for Computing "Month 1", "Month 2", etc.


I have a purchase order table that has a field called Document Date (POP10100.DOCDATE).

I need a formula that will compute "Month 1" for any such dates that are in the current month; "Month 2" for any such dates that are next month; "Month 3" for and such dates that are two months later; all the way through 18 months from now.

I have tried all variations of the T-SQL DATEPART, DATEDIFF, GETDATE, but the more I study T-SQL, the less I learn.  I just can't "get it".

Please help!


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Kyle AbrahamsSenior .Net DeveloperCommented:
  'Month ' + cast(
    (datepart(M, <col>) - datepart(M, getdate()) + 1) as varchar(2))
from table

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Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
Give us a mockup of what your POP10100 table looks like, then fire up your Excel and mock up what you are trying to pull off here.
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Microsoft SQL Server 2008

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