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Should You Use Index Hints?

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One of the things that the SQL Server query optimizer does is determine how to retrieve the data requested by your query.
Usually it does...

2018-07-31

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Question of the Day

BIT_COUNT II

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;

See possible answers