16.20 - tdr.DisableCoGroup - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL External Routine Programming

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Release Date
April 2020
Content Type
Programming Reference
Publication ID
B035-1147-162K
Language
English (United States)

Purpose

Disables the cogroup functionality for table operators that handle multiple input streams.

Syntax

tdr.DisableCoGroup()

Usage Notes

You can call tdr.DisableCoGroup in the contract function to turn off the cogroup functionality.

If cogroup is disabled, table operators that handle multiple input streams may return different results on systems with different configurations where the number of AMPs differ. To get consistent results on different configurations, cogroup must be enabled.

For more information about cogroups, see Teradata Vantage™ - SQL Operators and User-Defined Functions, B035-1210.