SQL WITH Clause | How to write SQL Queries using WITH Clause | SQL CTE (Common Table Expression)

Description:
SQL WITH Clause | 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.
SQL WITH Clause is also referred to as CTE which stands for Common Table Expression and can also be referred to as Subquery Refactoring.

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This video will also provide what are the advantages of using With Clause while writing SQL Queries and also mention few scenarios when you should be using With Clause while writing SQL Queries.

Download all the scripts and SQL Queries used in this video from my blog. Link below:
https://techtfq.com/blog/sql-with-clause-how-to-write-sql-query-using-with-clause

Timeline:
00:00 Intro
00:34 Query 1: Simple example of writing SQL Query using With clause
06:25 Query 2: Ideal Scenario for writing SQL Query using With clause
20:29 Advantages of using WITH Clause in SQL
22:19 When to use With Clause in SQL

If you are new to SQL then you might have assumed that SQL Queries must always start with SELECT clause but that's not true because we can also start SQL Queries using WITH Clause. Understanding With clause can really help you to solve some of the tricky problems in SQL.

In this video, we shall first see a simple example of using with clause within SQL query. The query no 2 explained in this video will be most suitable scenario for using WITH clause in SQL Query.

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