16.20 - tdr.GetHashByDef - 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

Retrieves the columns in the HASH BY clause for a specified input stream.

Syntax

tdr.GetHashByDef(  streamno  )
streamno
Parameter type: integer

The input stream number.

Return Value

A list of column names, which are the columns in the HASH BY clause.

Example: Get the Columns in the HASH BY Clause

Consider the following HASH BY clause for input stream 0:

HASH BY col1, col3

The following statement retrieves the columns in the HASH BY clause and prints them.

print( tdr.GetHashByDef( 0));

The output of the print statement is as follows:

$Num_Columns
[1] 2

$ColumnNames
[1] "col1" "col3"