Jul 23, 2025 · Subquery in a SELECT statement can be used to return a single value, multiple values or even a complete set of data depending on how it is structured. The most common type of subquery …

In this tutorial, you'll learn about SQL subquery, a query nested within another query, to form flexible queries.

Feb 13, 2025 · The SQL subquery is a SELECT query that is embedded in the main SELECT statement. The subquery can be nested inside a SELECT, INSERT, UPDATE, or DELETE statement or inside …

Oct 12, 2024 · Subqueries are useful SQL tools that allow us to nest one query inside another. However, combining multiple subqueries can make the overall query inefficient, long, and hard to understand …

Jun 26, 2023 · When a SELECT statement is embedded within another statement it is known as a subquery. There are two types of subqueries: basic subquery and correlated subquery. In this article …

Aug 14, 2025 · Placing a subquery in a SELECT clause lets you return calculated or related data right alongside the main table’s columns. The inner query is linked to the outer one through a correlated …

Oct 4, 2022 · SQL admins usually use subqueries inside the WHERE clause to narrow down the result of the main query (or outer query). You usually put subqueries inside brackets and you can use them …

Nov 18, 2021 · In this article, I provide five subquery examples demonstrating how to use scalar, multirow, and correlated subqueries in the WHERE, FROM/JOIN, and SELECT clauses.

We can use subqueries in SELECT, INSERT, UPDATE, and DELETE statements as well as WHERE, FROM, and HAVING clauses. Subqueries allow users to break complex queries into smaller, more …

May 15, 2025 · In conclusion, mastering the ‘subquery in SELECT statement in SQL’ enhances your data manipulation skills, offering you a powerful way to sharpen your SQL abilities. It’s a rewarding …