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Select  distinct  DATEDIFF(ww, GETDATE(), siparis_test) AS Hafta

The first day of week is sunday in the above function. How can I change it so that monday is the first day?

Thanks in advance.

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Please add the database system as a tag (sql server, postgresql, mysql,...) – DrColossos Apr 20 '11 at 10:47
up vote 3 down vote accepted

Just use SET DATEFIRST, e.g.

set datefirst 1
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