Microsoft® SQL Server 2008 R2 Unleashed

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Ranking Functions

SQL Server 2005 introduced four new ranking functions: ROW_NUMBER, RANK, DENSE_RANK, and NTILE. These functions allow you to analyze data and provide ranking values to result rows of a query. For example, you might use these ranking functions for assigning sequential integer row IDs to result rows or for presentation, paging, or scoring purposes.

All four ranking functions follow a similar syntax pattern:

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