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SQL COUNT(*) Vs COUNT(column_name)

, 30 Apr 2010 CPOL 19.7K 5
In many case we need to use COUNT function, but always we prefer COUNT(column_name) in placeof COUNT(*) and reason behind that COUNT(column_name) will perform better or faster than COUNT(*).Is this correct?SQL Server can't read just the contents of a single column without reading the...




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About the Author

Samrat Banerjee
Software Developer (Senior) Viscus Infotech Ltd. [India]
India India
Hi, I am Samrat Banerjee from India.
I am a Software Engineer working in .net platform.
I love to explore new technologies.

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