Sep 8, 2025 · 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.

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 …

It’s used to perform intermediate steps — like filtering, aggregating, or calculating — before feeding the result into a main query. Think of it like this: if a regular SQL query is a sentence,...

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

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 …

Jan 16, 2025 · A SQL subquery is a nested query within another SQL statement used for complex data retrieval, filtering, and aggregation to enhance database queries.

We can use the subquery as a column expression, as a condition in SQL clauses, and with operators like =, >, <, >=, <=, IN, BETWEEN, etc. Following are the rules to be followed while …

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. A …

What is a Subquery and Where Can It Be Used? Subquery (Nested Query) – A query inside another SQL query used to return intermediate results for filtering or calculation. A subquery is …

Jul 23, 2025 · 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 …