Hi
Here:
https://www.postgresql.org/docs/12/view-pg-roles.html
we state:
"This view explicitly exposes the OID column of the underlying table,
since that is needed to do joins to other catalogs."
I think it's superfluous to mention this now OIDs are exposed by default;
attached patch (for REL_12_STABLE and HEAD) simply removes this sentence.
Regards
Ian Barwick
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Ian Barwick https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services