PostgreSQL: Documentation: 16: 11.9. Index-Only Scans and Covering Indexes
11.9. Index-Only Scans and Covering Indexes # All indexes in PostgreSQL are secondary indexes, meaning that each index is stored separately …| PostgreSQL Documentation
11.9. Index-Only Scans and Covering Indexes # All indexes in PostgreSQL are secondary indexes, meaning that each index is stored separately …| PostgreSQL Documentation
