17.10 - Creating a Join Index on a Table with Transaction Time - 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)

To create a join index on a table with transaction time, precede the SELECT statement in the join index definition with a CURRENT TRANSACTIONTIME or NONSEQUENCED TRANSACTIONTIME qualifier. For example:

   CREATE JOIN INDEX Policy_Types_JI AS
   CURRENT TRANSACTIONTIME SELECT Policy_Type, Policy_Duration
   FROM Policy_Types;

A join index that is current in the transaction-time dimension must project the transaction-time column in the SELECT statement. Here, the Policy_Duration column is the transaction-time column.