On Tue, Feb 13, 2018 at 3:57 PM, Peter J. Holzer <hjp-pg...@hjp.at> wrote:

> (That said, it looks like both PostgreSQL and MariaDB include additional
> columns beyond those mandated by the standard - you can't rely on those,
> of course. And some databases like Oracle don't even have an information
> schema.)

​Given the documented charter of information_schema I'd present your
conclusion and evidence to pgsql-bugs...while I suppose extra columns are
not inherently harmful at minimum they would need to be documented if kept.

David J.

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