"David G. Johnston" <david.g.johnston@gmail.com> writes:
> Basically, a permission check requires two things and the complaint is that
> only one of those things is mentioned in the error message.
No, the complaint is that the wrong thing is shown --- but I don't
know what's showing it; aclcheck_error() certainly doesn't.
There's a separate conversation to be had perhaps about whether
aclcheck_error's standard message *should* include the role name
whose permissions were checked. I have a vague feeling that that
omission was intentional, but it was so long ago that I don't
recall for sure. It seems like something that'd be good to show
in more complicated situations with views, security definer
functions, etc.
regards, tom lane