17.05 - Valid UNION Operations - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Manipulation Language

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
Published
January 2021
Language
English (United States)
Last Update
2021-01-22
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Besides simple queries, UNION can be used within the following operations:

  • Derived tables
    You cannot use the HASH BY or LOCAL ORDER BY clauses in derived tables with set operators.
  • Subqueries
  • INSERT … SELECT statements
  • Non-recursive CREATE VIEW statements

UNION ALL is the only valid set operator in a WITH RECURSIVE clause or CREATE RECURSIVE VIEW statement that defines a recursive query.