Tuesday, 6 January 2009

What are Aggregate functions?

 Aggregate functions in SQL SERVER 2008 with example.Aggregate functions are applied to a group of data values from a column. Aggregate functions always return a single value.SQL SERVER 2008 / Transact-SQL supports following aggregate functions:AVG: Calculates the arithmetic mean (average) of the data values contained within a column. The column must contain

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