T-SQL Window Functions
T-SQL Window Functions Most T-SQL developers recognize the value of window functions for data analysis calculation. In T-SQL Window Functions: For Data Analysis and Beyond, renowned T-SQL expert…
Specifikacia T-SQL Window Functions
T-SQL Window Functions
Most T-SQL developers recognize the value of window functions for data analysis calculation. In T-SQL Window Functions: For Data Analysis and Beyond, renowned T-SQL expert Itzik Ben-Gan introduces breakthrough techniques for using window functions to handle many common T-SQL querying tasks with unprecedented elegance and power.Ben-Gan first explains why window functions can often be a far better solution than traditional predicate-based approaches. But window functions can do far more than that, and optimizations in recent versions of SQL Server have made them more powerful than ever.
You'll find detailed coverage of ordered set functions (including SQL Server 2017's STRING_AGG); plus an extensive section on optimization. Next, using extensive code examples, he guides you through each type of window function: Aggregate, Ranking, Distribution and Offset. The book concludes
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