PostgreSQL Query Optimization Guide

Database performance is crucial. Here’s how to optimize PostgreSQL queries.

Understanding EXPLAIN ANALYZE

EXPLAIN ANALYZE
SELECT * FROM users WHERE email = '[email protected]';

Index Strategies

• B-tree indexes for equality and range queries
• GIN indexes for full-text search
• Partial indexes for filtered queries

Query Optimization

-- Bad: Using SELECT *
SELECT * FROM orders;

-- Good: Select only needed columns
SELECT id, total, created_at FROM orders;

Connection Pooling

Use pgBouncer for efficient connection management.

Optimize today for better performance tomorrow!