Subqueries and the FROM Clause - 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
2024-04-05
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lifecycle
latest
Product Category
Teradata Vantage™

If a column reference is made from an inner query to an outer query, then it must be fully qualified with the appropriate table name from the FROM clause of the outer query.

Any subquery must contain a FROM clause, and every column referenced in the SELECT statement must be in a table referenced either in the FROM clause for the subquery or some FROM clause in an outer query containing the subquery.
SQL Statement Main Query FROM Clause Required
  • ABORT
  • DELETE
  • SELECT
  • UPDATE
No.
  • ABORT
  • SELECT
  • UPDATE
Optional.
DELETE Optional, depending on the syntax used.