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SQL is the standard language for Database Management System. It is used for storage, manipulation and retrieval of data in databases. In this tutorial we will be discussing Subquery in SQL. A Subquery is a query within a query.

It is also called Inner query or a Nested query which again refers to a query within another SQL query and embedded within the WHERE clause. A subquery is used to return data that will be used in the main query as a condition to further restrict the data to be retrieved.

Subqueries can be used with the SELECT, INSERT, UPDATE, and DELETE statements along with the operators like =, IN, BETWEEN, etc. Subqueries also can be used with INSERT and UPDATE statements. To know more about this amazing and essential topic, watch the video till the end.

Following pointers will be covered in this video:
00:00:00 Introduction
00:01:18 Problem Statement
00:01:56 What is a Subquery?
00:02:24 How Many Parts are There in a Subquery?
00:02:38 How Subquery Executes?
00:03:42 Type of Subquery
00:05:00 Demo for Subqueries

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