Sharad Nandwani


SQLServerCentral Article

Unique Identifier: Usage and Limitations

The Unique Identifier datatype in SQL Server has tremendous potential to solve many of the issues one finds with Identity fields, other primary keys, etc. However it also has some drawbacks and limitations. Author Sharad Nandwani looks at some of the pros and cons of this datatype.

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2004-06-24

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BIT_COUNT() III

In SQL Server 2025, I run this code:

select bit_count(-1)
What is returned?

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