Specifying Subqueries - 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™
The rules and restrictions are:
  • You can specify up to 64 levels of nesting of subqueries. Each subquery can specify a maximum of 128 tables or single-table views.

    This limit is established using the DBS Control field MaxParseTreeSegs. The value for MaxParseTreeSegs must be set to 256 or higher define an upper limit of 64 subquery nesting levels.

    See Teradata Vantage™ - Database Utilities, B035-1102, for information about how to change the MaxParseTreeSegs setting in the DBS Control record.

  • Subqueries in search conditions cannot contain SELECT AND CONSUME statements.
  • Subqueries in search conditions cannot specify the TOP n operator.