Design the indexing strategy for a user search feature: search by name (exact and partial), email, status, and date range.

1) Exact match: CREATE UNIQUE INDEX ON users(email) — already unique; B-Tree for =. 2) Name partial match (full-text): CREATE INDEX ON users USING GIN(to_tsvector('english', first_name || ' ' || last_name)). Query: WHERE to_tsvector('english', ...) @@ to_tsquery('john'). 3) OR for simple LIKE prefix: CREATE INDEX ON users(last_name) for WHERE last_name LIKE 'Smith%'. 4) Status filter: low cardinal