Trigger action overview

A trigger action is a simple SQL statement.

For example:

DELETE FROM FlightAvailability 
  WHERE flight_id IN (SELECT flight_id FROM FlightAvailability 
    WHERE YEAR(flight_date) < 2005);

A trigger action does have some limitations, though; for example, it cannot contain dynamic parameters or alter the table on which the trigger is defined. See the "Triggered-SQL-statement" section of the "CREATE TRIGGER statement" topic in the Java DB Reference Manual for details.

Related concepts
Performing referential actions
Accessing before and after rows
Triggers and exceptions
Related reference
Examples of trigger actions