17.10 - ALTER TABLE Syntax Elements (ANSI Valid-Time Table Form) - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - ANSI Temporal Table Support

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1186-171K
Language
English (United States)
table_name
The name of the valid-time table. May include database qualifier.
valid_time_period
The name of the valid-time derived period column.
valid_start
The name of the column that will store the beginning bound of the valid-time period.
valid_end
The name of the column that will store the ending bound of the valid-time period.
[AS] VALIDTIME
Required to create valid-time tables in Vantage.
The [AS] VALIDTIME clause allows SELECT statements on valid-time tables to use special temporal qualifiers (AS OF, BETWEEN, FROM TO, CONTAINED IN), which ANSI does not support on valid-time tables. For more information see Valid-Time Modifications.
[AS] VALIDTIME is a Teradata extension to ANSI.
WITHOUT DELETE
Prevents automatic deletion of history and future rows when the valid-time derived period column is dropped from a table.
WITHOUT DELETE is a Teradata extension to ANSI.