Creating a New Valid-Time Table - Analytics Database - Teradata Vantage

Temporal Table Support

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
2023-10-30
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lifecycle
latest
Product Category
Teradata Vantage™

To create a valid-time table, use a normal CREATE TABLE statement, and define one column as a valid-time column. The valid-time column can either be derived from two DATE, TIMESTAMP, or TIMESTAMP[(n)] WITH TIME ZONE columns, or can be a single Period data type column: PERIOD(DATE), PERIOD(TIMESTAMP[(n)]), or PERIOD(TIMESTAMP[(n)] WITH TIME ZONE). Use the VALIDTIME or AS VALIDTIME column attribute to assign the column to be the valid-time column.

Example: Creating a Derived Period Valid-Time Column

   CREATE MULTISET TABLE Policy(
      Policy_ID INTEGER,
      Customer_ID INTEGER,
      Policy_Type CHAR(2) NOT NULL,
      Policy_Details CHAR(40),
      Policy_Start DATE NOT NULL,
      Policy_End DATE NOT NULL,
      PERIOD FOR Validity(Policy_Start,Policy_End) AS VALIDTIME
      )
   PRIMARY INDEX(Policy_ID);

Example: Creating a Period Data Type Valid-Time Column

   CREATE MULTISET TABLE Policy(
      Policy_ID INTEGER,
      Customer_ID INTEGER,
      Policy_Type CHAR(2) NOT NULL,
      Policy_Details CHAR(40),
      Validity PERIOD(DATE) NOT NULL AS VALIDTIME
      )
   PRIMARY INDEX(Policy_ID);