16.20 - Teradata Unity Support for SQL Procedures - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Detailed Topics

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Release Date
March 2019
Content Type
Programming Reference
Publication ID
B035-1184-162K
Language
English (United States)

Teradata Unity sends request-specific context information as part of a request that calls an SQL procedure to enable Teradata Database to change the result of the procedure indirectly by substituting a value predefined by Teradata Unity for a non-deterministic result. Teradata Database 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 Teradata Database has no knowledge of. Therefore, Teradata Database cannot guarantee that an SQL procedure call produces a consistent result in a Teradata Unity environment.