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supabase-postgres-best-practices

Write, review, and optimize Postgres queries, database structures, and configuration using guidance maintained by Supabase. Prioritized rules and SQL examples help assess query speed, connections, indexes, and row-level security, which controls access to individual rows.

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Postgres performance optimization and best practices from Supabase. Use this skill when writing, reviewing, or optimizing Postgres queries, schema designs, or database configurations.

See how to install

Good for

  • Review slow SQL queries
  • Assess table structures and indexes
  • Review connection pooling and scaling settings
  • Check row-level security policies

Files included (38)

  • SKILL.md2.5 KB
  • AGENTS.md2.1 KB
  • agents/openai.yaml145 B
  • README.md3.1 KB
  • references/_contributing.md4.1 KB
  • references/_sections.md1.6 KB
  • references/_template.md1.0 KB
  • references/advanced-full-text-search.md1.4 KB
  • references/advanced-jsonb-indexing.md1.4 KB
  • references/conn-idle-timeout.md1.3 KB
  • references/conn-limits.md1.3 KB
  • references/conn-pooling.md1.3 KB
  • references/conn-prepared-statements.md1.5 KB
  • references/data-batch-inserts.md1.3 KB
  • references/data-n-plus-one.md1.3 KB
  • references/data-pagination.md1.3 KB
  • references/data-upsert.md1.4 KB
  • references/lock-advisory.md1.5 KB
  • references/lock-deadlock-prevention.md1.8 KB
  • references/lock-short-transactions.md1.3 KB
  • references/lock-skip-locked.md1.3 KB
  • references/monitor-explain-analyze.md1.4 KB
  • references/monitor-pg-stat-statements.md1.4 KB
  • references/monitor-vacuum-analyze.md1.5 KB
  • references/query-composite-indexes.md1.4 KB
  • references/query-covering-indexes.md1.3 KB
  • references/query-index-types.md1.5 KB
  • references/query-missing-indexes.md1.2 KB
  • references/query-partial-indexes.md1.3 KB
  • references/schema-constraints.md1.8 KB
  • references/schema-data-types.md1.4 KB
  • references/schema-foreign-key-indexes.md1.6 KB
  • references/schema-lowercase-identifiers.md1.7 KB
  • references/schema-partitioning.md1.5 KB
  • references/schema-primary-keys.md1.8 KB
  • references/security-privileges.md1.5 KB
  • references/security-rls-basics.md1.3 KB
  • references/security-rls-performance.md1.5 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

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

PriorityCategoryImpactPrefix
1Query PerformanceCRITICALquery-
2Connection ManagementCRITICALconn-
3Security & RLSCRITICALsecurity-
4Schema DesignHIGHschema-
5Concurrency & LockingMEDIUM-HIGHlock-
6Data Access PatternsMEDIUMdata-
7Monitoring & DiagnosticsLOW-MEDIUMmonitor-
8Advanced FeaturesLOWadvanced-

How to Use

Read individual rule files for detailed explanations and SQL examples:

references/query-missing-indexes.md
references/schema-partial-indexes.md
references/_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)

References

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