17.05 - Rules for Using Scalar Subqueries in a DELETE Statement - 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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You can specify a scalar subquery in the WHERE clause of a DELETE statement in the same way you can specify one for a SELECT statement.

You can also specify a DELETE statement with a scalar subquery in the body of a trigger. However, the database processes any noncorrelated scalar subquery you specify in the WHERE clause of a DELETE statement in a row trigger as a single-column single-row spool instead of as a parameterized value.