The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/12/ddl-constraints.html Description: As asked here, https://dba.stackexchange.com/questions/270567/can-a-foreign-key-be-referring-to-the-same-table-as-the-source the documentation specifies that a foreign key must reference another table. But it can also be the same table.
Соглашаюсь с условиями обработки персональных данных
