Cogroup Use Case - Aster Analytics

Teradata Aster® Analytics Foundation User GuideUpdate 2

Product
Aster Analytics
Release Number
7.00.02
Published
September 2017
Language
English (United States)
Last Update
2018-04-17
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dita:id
B700-1022
lifecycle
previous
Product Category
Software

Cogrouping allows SQL-MapReduce functions to be applied to related groups of information derived from different data sets. The different data inputs are grouped into a nested structure using a cogroup function before the SQL-MapReduce function operates on them.

An example of a cogroup use case is a web store that wants to know how much sales revenue to attribute to advertisements, based on web page views (impressions) and clicks leading to a purchase. This type of result cannot be easily computed using SQL or SQL-MapReduce capabilities without multiple data inputs. The multiple data inputs in this case are the logs from the web store and the logs from the ad server.