What is a fanout?

Knowledge Drop

Last  Updated: Jan 21, 2019

A "fanout" happens when you join two tables and a single value gets duplicated in the end result. This screws up aggregation since some of the values are being double counted. "Symmetric aggregates" was invented to prevent bad aggregation due to fanouts.

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Last update:
‎04-05-2021 09:11 AM
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