Alex Dubitskiy

Difference between two dates in weeks

Returns difference between two dates in weeks, takes into account @@DATEFIRST setting

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2008-05-28 (first published: 2008-04-11)

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In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:

UserID  UserPermissions
15
23
37
4       NULL

What is returned when I run this code:

select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 4;