Selecting data in SQL videos | SQL Queries Part 12 - Correlated Subqueries

Posted by Andrew Gould on 31 October 2012

A correlated subquery is a subquery which depends on an outer query for its values. If that doesn't make much sense, this video attempts to explain exactly what that means. You'll see how to build simple correlated subqueries, including why it's necessary to use table aliases, along with an explanation of what happens when you execute the query.

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