Special characters

Special Characters can lead to many problems. Identifying and reporting on them can save a lot of headache down the road.

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2016-04-08 (first published: 2014-08-19)

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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;