-CREATE INDEX pcu_node_pcu_id_key ON pcu_node (pcu_id);
-CREATE INDEX pcu_node_node_id_key ON pcu_node (node_id);
+CREATE INDEX pcu_node_pcu_id_idx ON pcu_node (pcu_id);
+CREATE INDEX pcu_node_node_id_idx ON pcu_node (node_id);
+
+CREATE VIEW node_pcus AS
+SELECT node_id,
+array_to_string(array_accum(pcu_id), ',') AS pcu_ids,
+array_to_string(array_accum(port), ',') AS ports
+FROM pcu_node
+GROUP BY node_id;