On Wed, Feb 28, 2018 at 7:34 AM, Jeremy Finzel <finzelj@gmail.com> wrote:
We want to enforce a policy, partly just to protect those who might forget, for every table in a particular schema to have a primary key. This can't be done with event triggers as far as I can see, because it is quite legitimate to do:
BEGIN;
CREATE TABLE foo (id int);
ALTER TABLE foo ADD PRIMARY KEY (id);
COMMIT;
It would be nice to have some kind of "deferrable event trigger" or some way to enforce that no transaction commits which added a table without a primary key.
And then just never bother to ever insert anything into the column FILLER? It fulfills your stated requirement of every table having a primary key. Of course, you could amend the policy to say a "non-NULL primary key".
--
I have a theory that it's impossible to prove anything, but I can't prove it.
