17.05 - GROUP BY and Built-in Ordered Analytic Functions - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Manipulation Language

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
Published
January 2021
Language
English (United States)
Last Update
2021-01-22
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For built-in ordered analytic functions specific to Vantage, such as CSUM and MAVG, GROUP BY determines the partitions over which the function executes. For an example, see Example: Specifying GROUP BY Using an Ordered Analytic Function.

For window functions, such as SUM and AVG, GROUP BY collapses all rows with the same value for the group-by columns into a single row. The GROUP BY clause must include all the columns specified in the:
  • Select list of the SELECT clause
  • Window functions in the select list of a SELECT clause
  • Window functions in the search condition of a QUALIFY clause
  • The condition in a RESET WHEN clause

For examples and more information on GROUP BY and ordered analytical functions, see Teradata Vantage™ - SQL Functions, Expressions, and Predicates, B035-1145.