On 28 February 2017 at 18:03, David G. Johnston <david.g.johns...@gmail.com> wrote:
> On Tue, Feb 28, 2017 at 9:50 AM, Ivan Voras <ivo...@gmail.com> wrote: > >> >> ivoras=# alter table foo alter constraint "foo_a_b_key" deferrable; >> ERROR: constraint "foo_a_b_key" of relation "foo" is not a foreign key >> constraint >> >> > A more clear error message would be: > > EROR: cannot alter non-foreign key constraint "foo_a_b_key" of relation > "foo" > > Though I'm not sure how that meshes with the error message style guides... > Any idea what underlying technical reason prohibits marking non-fk constraints as deferrable?