Databases sql Intermediate

PostgreSQL Index Strategy

Common index patterns for PostgreSQL: B-tree, partial, GIN for JSONB, and composite.

sql

-- Standard B-tree
CREATE INDEX idx_slug ON modules(slug);

-- Partial index (only published)
CREATE INDEX idx_published ON modules(published_at DESC)
  WHERE is_published = true;

-- Composite
CREATE INDEX idx_cat_level ON modules(category_slug, level);

-- GIN for full-text
CREATE INDEX idx_fts ON modules USING GIN(to_tsvector('english', title || ' ' || description));

Prerequisites

PostgreSQL >= 14

Pro Tips

→ Use EXPLAIN ANALYZE to confirm index usage.
→ Use CONCURRENTLY to avoid locking.

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Module Info

Language: sql
Level: Intermediate
Read time: 5 min
Published: Feb 2025
License: Commercial License

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