fixed the config loading issue

Author: zilder

init.c

@@ -174,11 +174,11 @@ load_relations_hashtable(bool reinitialize)
 	ListCell   *lc;
 	char	   *schema;
 	PartRelationInfo *prel;
-	char		sql[] = "SELECT pg_class.relfilenode, pg_attribute.attnum, cfg.parttype, pg_attribute.atttypid "
+	char		sql[] = "SELECT pg_class.oid, pg_attribute.attnum, cfg.parttype, pg_attribute.atttypid "
 						"FROM %s.pathman_config as cfg "
-						"JOIN pg_class ON pg_class.relfilenode = cfg.relname::regclass::oid "
+						"JOIN pg_class ON pg_class.oid = cfg.relname::regclass::oid "
 						"JOIN pg_attribute ON pg_attribute.attname = lower(cfg.attname) "
-						"AND attrelid = pg_class.relfilenode";
+						"AND attrelid = pg_class.oid";
 	char *query;
 
 	SPI_connect();