16.20 - Usage Notes - 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)

A table function calls FNC_GetPhase before doing anything else.

For a table function that is passed in a variable set of input arguments (where the mode is TBL_MODE_VARY) and needs to know when it is being passed in the last logical, or qualified, row on an AMP, the best practice is to use FNC_GetPhaseEx instead of FNC_GetPhase. For details, see FNC_GetPhaseEx.