Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Chapter 22, Problem 2PE
Program Plan Intro
Partial aggregation
- The partial aggregation is used for running the aggregate’s state transition function over different subsets of input data.
- It then combines the state values from those subsets for producing the same state value.
- Partial aggregation can be used for most of the aggregate functions such as COUNT, AVG, SUM and so on.
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