postgres=# ALTER TABLE ONLY workplaces
postgres-#
postgres-#     ADD CONSTRAINT workplaces_resume_id_d5933b72_fk_resumes_id FOREIGN KEY (resume_id) REFERENCES resumes(id) DEFERRABLE INITIALLY DEFERRED;
ERROR:  constraint "workplaces_resume_id_d5933b72_fk_resumes_id" for relation "workplaces" already exists