17.10 - Teradata Unity Support for SQL Procedures - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1184-171K
Language
English (United States)

Teradata Unity sends request-specific context information as part of a request that calls an SQL procedure to enable Vantage to change the result of the procedure indirectly by substituting a value predefined by Teradata Unity for a non-deterministic result. Vantage makes this context information available to the SQL statements embedded within a procedure when it is called from the default connection for the session.

However, SQL procedures can generate and use their own arbitrary non-deterministic values that Vantage has no knowledge of. Therefore, Vantage cannot guarantee that an SQL procedure call produces a consistent result in a Teradata Unity environment.