# Nested Loop Join

A join algorithm that searches the inner input for each qualifying outer row.

## What is **Nested Loop Join** in a relational database?

**Nested Loop Join** — A join algorithm that searches the inner input for each qualifying outer row.

Level: Freelancer · [More Database terms at this level](https://www.ask-codey.com/glossary/subjects/database/freelancer)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/nested-loop-join