17.00 - Defining Triggers for System-Time Tables - Teradata Database

Teradata Vantageā„¢ - ANSI Temporal Table Support

prodname
Advanced SQL Engine
Teradata Database
vrm_release
17.00
created_date
June 2020
category
Programming Reference
featnum
B035-1186-170K

Triggers can be defined for INSERT, DELETE, and UPDATE operations on system-time tables. Note the following:

  • Actions are triggered only for actions on open rows, that is, rows that have not been logically deleted from the table.
  • Defined actions cannot reference the component beginning or ending bound TIMESTAMP columns of the SYSTEM_TIME derived period column.
  • The DELETE or UPDATE operation that triggers an action can be unqualified or can include the temporal FOR PORTION OF qualifier.
  • Trigger actions on ANSI temporal tables can be qualified with FOR PORTION OF.