PostgreSQL Tutorial: Triggers

June 2, 2024

A PostgreSQL trigger is a function invoked automatically whenever an event such as insert, update, or delete occurs. In this section, you will learn about triggers and how to manage them effectively.


  • Introduction to PostgreSQL trigger – give you a brief overview of PostgreSQL triggers, why you should use triggers, and when to use them.
  • Create trigger – show you step by step how to create your first trigger in PostgreSQL.
  • Drop trigger– describe steps of how to use the DROP TRIGGER statement to delete a trigger from a table.
  • List triggers – shows you how to list triggers in PostgreSQL database.
  • Alter trigger – guide you on how to use the ALTER TRIGGER statement to rename a trigger.
  • Disable trigger – show how how to disable a trigger or all triggers that belong to a table.
  • Enable triggers – learn how to enable a trigger or all triggers associated with a table.
  • Event Trigger – Introduce the event trigger that fires when an event related to a DDL statement occurs.