ALTER TABLE public.import_tetel DROP CONSTRAINT tetel_fk1;
ALTER TABLE public.import_tetel DROP CONSTRAINT tetel_fk2;
ALTER TABLE public.import_tetel DROP CONSTRAINT tetel_fk3;
ALTER TABLE public.import_tetel DROP CONSTRAINT tetel_fk4;
ALTER TABLE public.import_tetel DROP CONSTRAINT tetel_fk5;
ALTER TABLE public.import_tetel DROP CONSTRAINT tetel_fk6;
ALTER TABLE public.import_tetel DROP CONSTRAINT tetel_ch1;