-COALESCE(peer_sites.site_ids, '{}') AS site_ids,
-COALESCE(peer_sites.peer_site_ids, '{}') AS peer_site_ids,
-COALESCE(peer_persons.person_ids, '{}') AS person_ids,
-COALESCE(peer_persons.peer_person_ids, '{}') AS peer_person_ids,
-COALESCE(peer_keys.key_ids, '{}') AS key_ids,
-COALESCE(peer_keys.peer_key_ids, '{}') AS peer_key_ids,
-COALESCE(peer_nodes.node_ids, '{}') AS node_ids,
-COALESCE(peer_nodes.peer_node_ids, '{}') AS peer_node_ids,
-COALESCE(peer_slices.slice_ids, '{}') AS slice_ids,
-COALESCE(peer_slices.peer_slice_ids, '{}') AS peer_slice_ids
-FROM peers
-LEFT JOIN peer_sites USING (peer_id)
-LEFT JOIN peer_persons USING (peer_id)
-LEFT JOIN peer_keys USING (peer_id)
-LEFT JOIN peer_nodes USING (peer_id)
-LEFT JOIN peer_slices USING (peer_id);
+COALESCE((SELECT site_ids FROM peer_sites WHERE peer_sites.peer_id = peers.peer_id), '{}') AS site_ids,
+COALESCE((SELECT peer_site_ids FROM peer_sites WHERE peer_sites.peer_id = peers.peer_id), '{}') AS peer_site_ids,
+COALESCE((SELECT person_ids FROM peer_persons WHERE peer_persons.peer_id = peers.peer_id), '{}') AS person_ids,
+COALESCE((SELECT peer_person_ids FROM peer_persons WHERE peer_persons.peer_id = peers.peer_id), '{}') AS peer_person_ids,
+COALESCE((SELECT key_ids FROM peer_keys WHERE peer_keys.peer_id = peers.peer_id), '{}') AS key_ids,
+COALESCE((SELECT peer_key_ids FROM peer_keys WHERE peer_keys.peer_id = peers.peer_id), '{}') AS peer_key_ids,
+COALESCE((SELECT node_ids FROM peer_nodes WHERE peer_nodes.peer_id = peers.peer_id), '{}') AS node_ids,
+COALESCE((SELECT peer_node_ids FROM peer_nodes WHERE peer_nodes.peer_id = peers.peer_id), '{}') AS peer_node_ids,
+COALESCE((SELECT slice_ids FROM peer_slices WHERE peer_slices.peer_id = peers.peer_id), '{}') AS slice_ids,
+COALESCE((SELECT peer_slice_ids FROM peer_slices WHERE peer_slices.peer_id = peers.peer_id), '{}') AS peer_slice_ids
+FROM peers;