PostgreSQL Full-Text Search
PostgreSQL's built-in full-text search is powerful and often underutilized. Let's change that.Why Not Elasticsearch?
For many applications, PostgreSQL's built-in search is sufficient. It eliminates the operational overhead of maintaining a separate search cluster.How It Works
PostgreSQL uses tsvector and tsquery data types:CREATE INDEX idx_fts ON articles
USING GIN (to_tsvector('english', title || ' ' || content));
Ranking Results
SELECT title,
ts_rank(to_tsvector('english', content), query) AS rank
FROM articles, to_tsquery('english', 'postgresql & search') query
WHERE to_tsvector('english', content) @@ query
ORDER BY rank DESC;
Advanced Features
- Weighted search — Give title matches higher priority
- Dictionary support — Custom dictionaries for different languages
- Phrase search — Exact phrase matching
Performance Tips
- Use GIN indexes for better performance
- Limit result sets with proper pagination
- Consider materialized views for complex searches
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