16.20 - FNC_TblOpSetHashByDef - 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

Allows the contract function writer to set the HASH BY specification when developing table operators.

Syntax

void
FNC_TblOpSetHashByDef(int           streamno,
                      FNC_Names_t  *colNames);
int streamno
the input stream number.
FNC_Names_t *colNames
a pointer to the HASH BY metadata.

For details about the FNC_Names_t structure, see Table Operator Data Structures.

Usage Notes

This function can only run if called from the contract function. It will error if the stream number is invalid or the HASH BY metadata was already set.