Subquery In SQL | SQL Subquery Tutorial With Examples | SQL Tutorial For Beginners | Simplilearn

This video on Subquery in SQL will make you understand what subqueries are and how to write a subquery. You will learn subqueries using the select, insert, update and delete commands. You will look at the SQL subquery tutorial with examples on MySQL workbench. Got a Question on this topic? Let us know in the comment section below 👇 and we'll have our experts answer it for you.

00:00:00 What is a Subquery?
00:03:49 Types of Subquery
00:04:04 Subqueries with the SELECT Statement
00:07:46 Subqueries with the INSERT Statement
00:15:18 Subqueries with the UPDATE Statement
00:19:04 Subqueries with the DELETE Statement

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What is a Subquery in SQL?
A subquery is a query within another query. they are nested inside a SELECT, INSERT, UPDATE, or DELETE statement, or inside another subquery. Subqueries can be categorized as correlated or uncorrelated. A subquery can be used anywhere an expression is allowed. It is another way of returning data from multiple tables.

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[PriyaSharma-xbju]

Thank you for this, I was struggling with subqueries but you explained it so lucidly with examples.

[futuremillionairetrader]

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[KOTHAMASULAASYASREEBCD]

What is the significance of using EMPLOYEE_B in query?

[sathishrao]

Hmm.. Not sure if these are the most relevant examples for subqueries since 'where' clause can be used directly without subqueries in all these examples.. Use of subqueries to accomplish these tasks is certainly going to confuse beginners.

[LuisTejadaphysiq]

This was awesome. I was struggle to understand subqueries, now i have a much better idea. Thank you

[rutujapatil]

Nice video! It was very helpful.Thank you.

[kavanajain]

while updating, deleting the employees list why can't we simply use where clause instead of using subquery?

[rohanmahaldar]

What do you mean when you say there are 4 types of sub-queries ? Like I have seen sub-queries with from clause as well.

[lvkwqkc]

How to find the 3rd max salary from employee

[aakashprabhu]

Where to get database for subqueries used in the video

[kiranguntu]

I didn't understand one thing...in subquery u wrote employee table as employee_b with out using alias name

[krishnajhaveri]

Thank uh so much sir uh explain it in very simple manner 😍

[boringimmigrantcouples]

Hi, I could not find this course in your website?!

[issajelili]

How do I download the dataset used in this video? pleased!

[buugedy]

You speak quite fast and its is hard to follow you at this speed.

[mohamedidris]

Can you share this csv files which you used @simplelearn