Nov 22, 2024 · A subquery is a query that is nested inside a SELECT, INSERT, UPDATE, or DELETE statement, or inside another subquery. The code samples in this article use the AdventureWorks2022 or AdventureWorksDW2022 sample database, which you can download from the Microsoft SQL Server Samples and Community Projects home page.

What is SUBQUERY in SQL Server? A SUBQUERY is a SQL query within a SQL statement. A subquery can be part of a SELECT, INSERT, UPDATE or DELETE statement and is itself always a SELECT query. It is also possible for a subquery to have another subquery within it.

Apr 14, 2025 · What is SQL Subquery? In SQL, a subquery can be defined as a query embedded within another query. It is often used in the WHERE, HAVING, or FROM clauses of a statement. Subqueries are commonly used with SELECT, UPDATE, INSERT, and DELETE statements to achieve complex filtering and data manipulation. They are an essential tool when we need to ...

A subquery is a query nested inside another statement such as SELECT, INSERT, UPDATE, or DELETE. Let’s see the following example. Consider the orders and customers tables from the sample database.

Dec 28, 2023 · In SQL Server, Subqueries are a powerful feature used to perform complex queries and combine data from multiple tables or multiple data sets. Subqueries can be used in different business cases and in different scenarios to …

Jan 2, 2025 · In this article, We will learn about Subquery in a SELECT statement by understanding various examples and output in detail. A subquery (also known as a nested query or inner query) is a query placed inside another query. The subquery returns a result that is used by the outer query.

May 29, 2020 · A subquery, or nested query, is a query placed within another SQL query. There are many different scenarios where you may want to include a query in the WHERE , FROM , or SELECT clauses of your main query.

Mar 25, 2025 · In this query: The subquery is executed first. It searches the departments table and returns the department_id of the ‘Sales’ department.; Next, the outer query is executed. It retrieves the department_id returned by the subquery and returns all employees whose department_id matches with the retrieved one.; This is how queries, including subqueries, are executed in SQL.

This SQL Server tutorial explains how to use subqueries in SQL Server (Transact-SQL) with syntax and examples. A subquery is a query within a query. In SQL Server (Transact-SQL), you can create subqueries within your SQL statements.

A subquery is an SQL query nested inside another query. The query that contains a subquery is known as an outer query. To write a subquery, you need to have a deep understanding of the SELECT statement: select_list. FROM . table1. INNER JOIN table2 ON join_condition. WHERE . filter_condition; Code language: SQL (Structured Query Language) (sql)