PostgreSQL Сброс последовательности
ALTER SEQUENCE <tablename>_<id>_seq RESTART WITH 1
Outrageous Oyster
ALTER SEQUENCE <tablename>_<id>_seq RESTART WITH 1
alter sequence <tableName>_id_seq restart with 1;
For an instance, we have a table named "groups" and we need to reset the id sequence with 1.
alter sequence groups_id_seq restart with 1;