Tom Lane wrote:
We could rename pg_attribute as pg_userattribute, and remove all the system attributes from that. To stay backwards-compatible, we could have a pg_attribute view on top of that contained the system attributes as well.

I don't really think this is necessary.  How many client programs have
you seen that don't explicitly exclude attnum<0 anyway?  The places that
will need work are inside the backend, and a view won't help them.

None, there probably isn't any client programs like that. It would be nice for programs to be able to discover what system attributes there is, though.

 Heikki Linnakangas

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