Re: TkSql and pg_group...

Sandro Dentella <sandro.dentella@tin.it> writes:
>   I'd like to understand how should an editor cope with this case: I'd like
>   to make tksql able to edit these tables too, but I see no way to act on a
>   record in a unique way.

You should not be editing system catalogs with INSERT/UPDATE/DELETE
operations in any case.

This points up that the initdb process is pretty lax about marking
catalog columns NOT NULL, even though essentially all fixed-width
columns in the catalogs are in fact expected to not be null ...
        regards, tom lane