Implementing Indexes and Optimizing Query Performance

Intermediate

⚡ Indexing & Query Optimization in PostgreSQL

Indexes in PostgreSQL drastically improve query efficiency by providing quick lookup capabilities.


🧱 Common Index Types

  • 🔍 B-tree: Ideal for high-selectivity columns
  • 📚 GIN: Best for full-text search

🛠️ Create a B-tree Index

CREATE INDEX idx_book_title ON books(title);

CREATE INDEX idx_fulltext_content ON articles USING GIN(to_tsvector('english', content));

🔬 Analyze Query Performance

EXPLAIN ANALYZE SELECT * FROM books WHERE title LIKE '%Data%';

📈 Keep Statistics Updated

ANALYZE;

✅ This helps the query planner make smarter decisions for execution paths.


🚀 Effective indexing and regular analysis ensure optimal database performance, even as your data grows.