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Handling NULL values in SQL Server 2005

In the simplest terms, a NULL value represents an unknown value. It's unknown in the sense that the value is: missing from the system, may not be applicable in the current situation, or might be added later. NULL values are different than any other value and are sometimes hard to compare and handle.

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2007-09-20

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Question of the Day

BIT_COUNT() V

What does this return on SQL Server 2025?

select bit_count(null)

See possible answers