billing=# \ds
                     Список отношений
 Схема  |       Имя        |        Тип         | Владелец 
--------+------------------+--------------------+----------
 public | consumers_id_seq | последовательность | billing
 public | consuming_id_seq | последовательность | billing
(записей:  2 )

billing=# select curval(consumers_id_seq);
ERROR:  column "consumers_id_seq" does not exist
billing=# select curval('consumers_id_seq');
ERROR:  function curval("unknown") does not exist
HINT:  No function matches the given name and argument types. You may need to add explicit type casts.
billing=# create sequence consumers_id_seq;
ERROR:  relation "consumers_id_seq" already exists

billing=# select curval('consumers_id_seq');