postgres-best-practices

name	postgres-best-practices
description	Postgres performance optimization and best practices from Supabase. Use this skill when writing, reviewing, or optimizing Postgres queries, schema designs, or database configurations. Triggers on tasks involving SQL queries, database schema design, indexes, connection pooling, RLS policies, or performance optimization.
license	MIT
metadata	{"author":"supabase","version":"1.0.0"}

Supabase Postgres Best Practices

Comprehensive performance optimization guide for Postgres, maintained by Supabase. Contains rules across 8 categories, prioritized by impact to guide automated query optimization and schema design.

When to Apply

Reference these guidelines when:

• Writing SQL queries or designing schemas
• Implementing indexes or query optimization
• Reviewing database performance issues
• Configuring connection pooling or scaling
• Optimizing for Postgres-specific features
• Working with Row-Level Security (RLS)

Rule Categories by Priority

Priority	Category	Impact	Prefix
1	Query Performance	CRITICAL	query-
2	Connection Management	CRITICAL	conn-
3	Schema Design	HIGH	schema-
4	Concurrency & Locking	MEDIUM-HIGH	lock-
5	Security & RLS	MEDIUM-HIGH	security-
6	Data Access Patterns	MEDIUM	data-
7	Monitoring & Diagnostics	LOW-MEDIUM	monitor-
8	Advanced Features	LOW	advanced-

How to Use

Read individual rule files for detailed explanations and SQL examples:

rules/query-missing-indexes.md
rules/schema-partial-indexes.md
rules/_sections.md

Each rule file contains:

• Brief explanation of why it matters
• Incorrect SQL example with explanation
• Correct SQL example with explanation
• Optional EXPLAIN output or metrics
• Additional context and references
• Supabase-specific notes (when applicable)

Full Compiled Document

For the complete guide with all rules expanded: AGENTS.md