Data & Analytics

PostgreSQL Database Management

Manage PostgreSQL databases with advanced querying, indexing, and performance optimization for production workloads.

Claude Code Cursor Copilot Windsurf Gemini CLI Codex

Overview

node-postgres (pg) is the foundational PostgreSQL client for Node.js, providing both low-level connection management and high-level query building. It supports connection pooling, prepared statements, streaming queries, and COPY protocol for bulk data operations. The library handles type parsing automatically, converting PostgreSQL types to JavaScript equivalents.

For modern applications, node-postgres works seamlessly with ORMs like Prisma and Drizzle, or can be used directly for maximum control over SQL queries. It supports transactions with savepoints, advisory locks, LISTEN/NOTIFY for real-time updates, and JSON/JSONB operations for semi-structured data. Connection pooling via pg-pool manages database connections efficiently, preventing connection exhaustion under load.

PostgreSQL itself offers advanced features that set it apart from other databases: full-text search, JSONB columns with GIN indexes, CTEs (Common Table Expressions), window functions, materialized views, and row-level security. The node-postgres library exposes all of these through parameterized queries, protecting against SQL injection while providing full access to PostgreSQL capabilities.

Who Is This For?

Set up connection pooling for a production Node.js API
Implement full-text search with PostgreSQL tsvector
Manage database migrations with versioned SQL scripts
Optimize slow queries with EXPLAIN ANALYZE and indexes

Installation

Setup for Claude Code

npm install pg && npm install -D @types/pg

Configuration

import { Pool } from "pg"

const pool = new Pool({
  connectionString: process.env.DATABASE_URL,
  max: 20,
  idleTimeoutMillis: 30000,
  connectionTimeoutMillis: 2000,
})

const { rows } = await pool.query(
  "SELECT * FROM users WHERE email = $1",
  [email]
)