WITH Clause in Oracle SQL & PLSQL Concpents with Practical

In Oracle SQL and PL/SQL, the WITH clause is used to create a temporary result set, also known as a Common Table Expression (CTE). This result set can be referenced within the context of a SELECT, INSERT, UPDATE, or DELETE statement. The primary advantage of using the WITH clause is to simplify complex queries by breaking them down into smaller, more manageable parts.
Here's a brief overview of how the WITH clause works and a practical example:
WITH cte_name (column1, column2, ...) AS (
SELECT column1, column2, ...
FROM your_table
WHERE your_conditions
)
SELECT *
FROM cte_name;