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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Be aware of the three valued logic when NULL gets involved: SQL Server: JOIN vs IN vs EXISTS – the logical difference

Posted by jpluimers on 2012/11/29

Great post: SQL Server: JOIN vs IN vs EXISTS – the logical difference.

Be aware of the three valued logic when NULL gets involved.

EXIST comes closes to what you expect.

And be aware that with IN, you cannod pass one parameter containing more than 1 IN value: sql server 2005 – Passing multiple values for one SQL parameter – Stack Overflow..

–jeroen

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