Mastering SQL: Unlock the Power of Common Table Expressions (CTEs)!
How to write SQL Queries using WITH Clause | SQL CTE (Common Table Expression)
In this video, we shall understand how to write SQL Queries using WITH Clause. We will go through the syntax of using WITH clause, and I will also explain how SQL treats and executes SQL Queries containing With Clause.
Download the SQL queries used in this video from my GitHub repo. Link below:
https://github.com/Hezekaih/SQL-TUTOR...
Chapters:
0:00 Introduction to CTE.
5:00 First use case (calculate the average salary of each department using CTE).
15:12 Second use case (find employees who are reporting to another employee using RECURSIVE CTE).
25:28 Third use case (ranking employees by salary within departments).
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#mysql #postgresql #sqlserver2019