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Message Posted: Thu, 20 Sep 2012 @ 11:03:05 GMT

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Subj:   add_months for integer-type dates
From:   Napflin Markus

Hi All,

We're often dealing with monthly data. That's why our DWH architect decided to define dates as integer of the format YYYYMM.

Now I'm looking for an easy way to add/subtract months (for building a UDF). Best idea so far is this:

     select 201209 as year_month_n, 1 as x
       , cast((year_month_n - 190000) * 100 + 1 as DATE) a
       , add_months(a,x) b
       , cast(b/100 + 190000 as INTEGER) as c

I'm sure there is a simpler way?

Thanks - Markus

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