<ul><li>Subqueries are essential for performing complex operations and extracting data from one table based on conditions applied to another table in PostgreSQL.</li><li>A subquery, also known as an inner or nested query, is a query within another query.</li><li>PostgreSQL supports subqueries in SELECT, INSERT, UPDATE, and DELETE operations.</li><li>This article provides a deep dive into understanding how subqueries work in PostgreSQL, including syntax, types, use cases, best practices, and performance considerations.</li></ul>

How Subqueries Work in SQL for PostgreSQL

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