Unsupported Syntax or Features - 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™

This table lists unsupported syntax or features. Attempt to use them causes an error.

Unsupported Syntax Explanation
INSERT ... SELECT None.
Positioned UPDATE A WHERE clause cannot use an updatable cursor to do a positioned UPDATE.
UPDATE FROM None.
UPDATE WHERE subquery A WHERE clause cannot use a subquery either to specify the primary index or to constrain a non-index column.
UPDATE SET primary_index_column You cannot update a primary index column because any change to the rowhash value for a row affects its distribution.
UPDATE SET partitioning_column You cannot update a partitioning column because any change to the partitioning for a row affects its location.
UPDATE SET identity_column You cannot update GENERATED ALWAYS identity column values.
UPDATE SET PARTITION You cannot update system-derived PARTITION values.

If PARTITION is a user-named column in a table, and not a GENERATED ALWAYS identity column, then it can be updated.