A Complete Guide to SQL Triggers in PostgreSQL

A Complete Guide to SQL Triggers in PostgreSQL

SQL triggers are less common but can be a great solution for certain situations. I'll provide examples for how to use triggers to enforce data integrity and track changes to a database.

SQL Triggers, also called Database Triggers, allow you to tell your SQL engine (for these examples, Postgres) to run a piece of code when an event happens, or even before the event.

Advantages of using SQL Triggers

  • Maintaining data integrity
  • Separating business logic
  • Atomic transactions

postgresql postgresql trigger trigger sql

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A Complete Guide to SQL Triggers in PostgreSQL

SQL Triggers, also called Database Triggers, allow you to tell your SQL engine (for these examples, Postgres) to run a piece of code when an event happens, or even before the event. We'll learn everything there is to know about SQL Triggers in PostgreSQL in this article.

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SQL Trigger Example | Triggers in SQL Tutorial

SQL trigger is a stored program that invoked by the database automatically when any change in the event occurs. Trigger is different from stored procedures.

SQL Trigger Example | Triggers in SQL Tutorial

SQL Trigger differ from stored procedures in that they are not called directly by the user: when a certain event occurs in the table, they are executed.