In this video, you will understand what is a subquery? A subquery, also known as a Nested query or Inner query, is a query that is embedded within another query such as SELECT, INSERT, UPDATE or DELETE . The result of the inner query is used as input or a condition for the outer query. Subqueries can be used in various parts of a SQL statement, such as the SELECT, FROM, WHERE, and HAVING clauses. The subquery is enclosed in parentheses and typically appears within the larger query. Subqueries allow you to create more complex queries and perform advanced filtering, aggregations, and joins based on the data from multiple tables. They provide a powerful way to retrieve and manipulate data in a database If you have any questions about MySQL? Ask us in the comment section below. Do not miss our Bestseller Courses: Our courses are also available on Udemy: Hive: Introduction to Python : Project on Data Warehouse / ETL Testing : Data Warehouse / ETL Testing : Introduction to Data Warehouse : RDBMS - SQL Course - Step by Step Guide to learn SQL : Please contact us for any further queries. learn@ #Data #datawarehouse #scd #etl #etltesting #sql #database #Bigdata #bigdatahadoop #bigdatatechnologies #bigdatapyspark #mysql #BigDataChallenges #BigDataSolutions #BigDataStrategy #datamining #DataScience #BigDataArchitecture #BigDataProjects #DataValidation #BigDataApplications #BigDataTraining #BigDataCareer #ETLTools #ETLTestScenarios