Category: PL/SQL

The WITH clause in Oracle PL/SQL, also known as a Common Table Expression (CTE), is a powerful feature that allows you to define a temporary result set within the scope of a single SQL statement. It enhances the readability and maintainability of complex SQL queries by breaking them into modular, named subqueries. Here’s a breakdown…(Continue Reading)

The mutating table error in Oracle PL/SQL occurs when a trigger or a stored procedure attempts to reference a table that is currently being modified by the same transaction. This error is raised to maintain the integrity of the data and prevent unexpected results that could arise from accessing a table in a state of…(Continue Reading)

An AFTER trigger in Oracle PL/SQL is a type of database trigger that is executed automatically after a specified event occurs in a database table. Triggers are special types of stored procedures that are defined to execute automatically in response to certain events on a particular table or view. These events can include INSERT, UPDATE,…(Continue Reading)

Triggers are a fundamental component of Oracle PL/SQL, and they allow developers to define actions that automatically execute in response to certain events on a particular table or view. Before triggers are a type of trigger that fires before the triggering event, providing developers with the opportunity to intervene and modify data before the action…(Continue Reading)

Triggers are a fundamental part of PL/SQL and are special types of stored programs that are automatically executed or fired in response to specific events on a particular table or view. Enabling Triggers Triggers are typically created using the CREATE TRIGGER statement. Once created, a trigger is enabled by default, meaning it will be automatically…(Continue Reading)