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geeksforgeeks.org
https://www.geeksforgeeks.org/sql/sql-subquery/
SQL Subquery - GeeksforGeeks
A subquery in SQL is a query nested inside another SQL query. It allows complex filtering, aggregation and data manipulation by using the result of one query inside another.
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w3resource.com
https://www.w3resource.com/sql/subqueries/understa…
SQL Subqueries - w3resource
A subquery is also called an inner query or inner select, while the statement containing a subquery is also called an outer query or outer select. The inner query executes first before its parent query so that the results of an inner query can be passed to the outer query.
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microsoft.com
https://learn.microsoft.com/en-us/sql/relational-d…
Subqueries (SQL Server) - SQL Server | Microsoft Learn
A subquery is also called an inner query or inner select, while the statement containing a subquery is also called an outer query or outer select. Many Transact-SQL statements that include subqueries can be alternatively formulated as joins.
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learnsql.com
https://learnsql.com/blog/sql-subquery-examples/
5 SQL Subquery Examples - LearnSQL.com
A subquery, or nested query, is a query placed within another SQL query. When requesting information from a database, you may find it necessary to include a subquery into the SELECT, FROM , JOIN, or WHERE clause.
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sqltutorial.net
https://www.sqltutorial.net/subquery.html
Subquery – SQL Tutorial
A subquery in SQL is a query that is nested within another query. It is used to retrieve data that will be used in the main query as a filter condition, or as a source of data for a calculation.
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codecademy.com
https://www.codecademy.com/article/how-to-use-sql-…
How to Use the SQL Subquery: A Detailed Guide - Codecademy
A SQL subquery, otherwise known as a nested SQL query, is a query within another query that helps filter, transform, or aggregate data before passing the results to the main query.
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datacamp.com
https://www.datacamp.com/tutorial/sql-subquery
SQL Subquery: A Comprehensive Guide - DataCamp
A SQL subquery is a nested query within another SQL statement used for complex data retrieval, filtering, and aggregation to enhance database queries.
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tutorialspoint.com
https://www.tutorialspoint.com/sql/sql-sub-queries…
SQL - Sub Queries
An SQL Subquery, is a SELECT query within another query. It is also known as Inner query or Nested query and the query containing it is the outer query. The outer query can contain the SELECT, INSERT, UPDATE, and DELETE statements.
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sqltutorial.org
https://www.sqltutorial.org/sql-subquery/
SQL Subquery
In this tutorial, you'll learn about SQL subquery, a query nested within another query, to form flexible queries.
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geeksforgeeks.org
https://www.geeksforgeeks.org/sql/how-to-use-a-sub…
How to Use a Subquery in a SELECT Statement - GeeksforGeeks
A subquery (also known as a nested query or inner query) is a query placed inside another query. The subquery is executed first, and its result is used by the outer query for further operations.