16.20 - firstParticipant() - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL External Routine Programming

Advanced SQL Engine
Teradata Database
Release Number
Release Date
April 2020
Content Type
Programming Reference
Publication ID
English (United States)

Provides a way to implement a table function that only needs one copy to participate and does not care which AMP the copy runs on.

Return Value

This method returns true if it is the first time being called and returns false otherwise.

The copy of the table function in which a call to Tbl.firstParticipant() returns true is the copy of the function that participates in the current transaction and request.