Loading Data into Temporal Tables | Teradata Vantage - 17.10 - Loading Data into Temporal Tables - 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)
Teradata supports the following methods of bulk loading data into temporal tables:
  • FastLoad (and applications that support the FastLoad protocol), can perform bulk loads directly into empty temporal tables, if the tables are not column partitioned.

    Do not use CURRENT INSERT (valid time or transaction time) if the FastLoad script includes a CHECKPOINT specification. Restarts during loading can change the valid time and transaction time values for rows that are inserted after the restart.

    In this case, use NONTEMPORAL INSERT instead, to ensure an exact one-to-one correspondence between the number of rows inserted and the number of rows that results in the target table.

  • MultiLoad can be used to load data into nontemporal staging tables, followed by the use of INSERT SELECT statements to load the data from the staging tables into temporal tables.
  • Teradata Parallel Transporter (TPT) includes the Update Operator, which can load temporal data from valid-time NoPI staging tables to valid-time or bitemporal tables.