17.10 - General - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - Temporal Table Support

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1182-171K
Language
English (United States)

Unless the NONTEMPORAL qualifier is specified, updates on temporal tables are always current in the transaction-time dimension.

All check, primary key, and temporal unique (current, sequenced, nonsequenced) constraints defined on the table are checked only on rows that are open in transaction time.

DML operations on tables defined with NORMALIZE produce a normalized set of modified rows. Some unmodified rows may be deleted from the target table as a result of the normalization.

When the target table is a normalized temporal table with transaction time, rows that are deleted as a result of the normalization are closed in transaction time.