Queue Tables and UPDATE (Upsert Form) - Analytics Database - Teradata Vantage

SQL Data Manipulation Language

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-10-04
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lifecycle
latest
Product Category
Teradata Vantageā„¢

The best practice is to avoid using the UPDATE statement on a queue table because the operation requires a full table scan to rebuild the internal queue table cache. You should reserve this statement for exception handling.

An UPDATE statement cannot be in a multistatement request that contains a SELECT and CONSUME request for the same queue table.

For more information on queue tables and the queue table cache, see Teradata Vantageā„¢ - SQL Data Definition Language Detailed Topics, B035-1184.