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SQL Tutorial

This website provides a SQL Tutorial, SSRS, Power BI, Python, Azure basics and advanced tutorials for beginners and professionals

You will find out a step-by-step walk through of the basics and advanced topics with practical and include numerous hands-on activities.

What is Correlated Subquery in SQL?

A correlated subquery is a subquery that uses the values of the outer query  and it is evaluated for each row processed by the outer query 

A correlated subquery  always depends on outer query for its value. Because of this dependency, a correlated subquery cannot be executed independently as a simple subquery .

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