Back to Basics: Count, Count, Count, Sum or how to Count

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Back to Basics: Count, Count, Count, Sum or how to Count (Unpublished)

There are at least 4 ways you can COUNT in SQL Server: COUNT(*), COUNT(ColumnName), COUNT(DISTINCT ColumnName) AND SUM() All 4 combined can be used to speed up queries especially for reporting.

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Back to Basics: Count, Count, Count, Sum or how to Count (Unpublished)