Module Guides

Basic

First, check out our module guide on Indexes for in-depth guides for each index (vector index, summary index, knowledge graph index). Each index corresponds to a default query engine for that index.

Then check out the rest of the sections below.

• Custom Query Engine
• Retriever Query Engine

Structured & Semi-Structured Data

• JSON Query Engine
• Pandas Query Engine
• Knowledge Graph Query Engine
• Knowledge Graph RAG Query Engine

Advanced

• Router Query Engine
• Retriever Router Query Engine
• Joint QA Summary Query Engine
• Sub Question Query Engine
• Multi-Step Query Engine
• SQL Router Query Engine
• SQL Auto Vector Query Engine
• SQL Join Query Engine
• SQL Query Engine with LlamaIndex + DuckDB
• Retry Query Engine
• Retry Source Query Engine
• Retry Guideline Query Engine
• CitationQueryEngine
• Recursive Retriever + Query Engine Demo
• Recursive Retriever + Document Agents
• Ensemble Query Engine Guide

Experimental

• FLARE Query Engine