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SQL in a Nutshell, 3rd Edition
book

SQL in a Nutshell, 3rd Edition

by Kevin Kline
November 2008
Intermediate to advanced content levelIntermediate to advanced
591 pages
17h 28m
English
O'Reilly Media, Inc.
Content preview from SQL in a Nutshell, 3rd Edition

Window Functions

Window functions are similar to aggregate functions in that they operate over many rows at one time. The difference lies in how you define those rows. Aggregate functions operate over the sets of rows defined by a query’s GROUP BY clause. With window functions, you specify the set of rows for each function call, so different invocations of a function within the same query can execute over different sets of rows.

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Publisher Resources

ISBN: 9780596155322Errata Page