PostgreSQL 9.6.5 Documentation
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Chapter 12. Full Text Search

Table of Contents
12.1. Introduction
12.1.1. What Is a Document?
12.1.2. Basic Text Matching
12.1.3. Configurations
12.2. Tables and Indexes
12.2.1. Searching a Table
12.2.2. Creating Indexes
12.3. Controlling Text Search
12.3.1. Parsing Documents
12.3.2. Parsing Queries
12.3.3. Ranking Search Results
12.3.4. Highlighting Results
12.4. Additional Features
12.4.1. Manipulating Documents
12.4.2. Manipulating Queries
12.4.3. Triggers for Automatic Updates
12.4.4. Gathering Document Statistics
12.5. Parsers
12.6. Dictionaries
12.6.1. Stop Words
12.6.2. Simple Dictionary
12.6.3. Synonym Dictionary
12.6.4. Thesaurus Dictionary
12.6.5. Ispell Dictionary
12.6.6. Snowball Dictionary
12.7. Configuration Example
12.8. Testing and Debugging Text Search
12.8.1. Configuration Testing
12.8.2. Parser Testing
12.8.3. Dictionary Testing
12.9. GIN and GiST Index Types
12.10. psql Support
12.11. Limitations
12.12. Migration from Pre-8.3 Text Search
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Examining Index UsageUpIntroduction