CREATE INDEX IF NOT EXISTS entities_type_canonical_idx
    ON entities (entity_type, canonical_name, id)
    WHERE tombstoned_at IS NULL;

CREATE INDEX IF NOT EXISTS entities_status_canonical_idx
    ON entities (status, canonical_name, id)
    WHERE tombstoned_at IS NULL;

CREATE INDEX IF NOT EXISTS entity_relations_source_entity_idx
    ON entity_relations (source_entity_id, relation_type, target_entity_id);

CREATE INDEX IF NOT EXISTS entity_relations_target_entity_idx
    ON entity_relations (target_entity_id, relation_type, source_entity_id);

CREATE INDEX IF NOT EXISTS entity_facts_freshness_idx
    ON entity_facts (entity_id, valid_until, field_name, observed_at DESC);