DROP PRIVILEGES OWNED BY

Hi,

This week I had a problem where I wanted to drop only the privileges a
certain role had in the system, while keeping all the objects. I
couldn't figure out a reasonable way to do that, so I've attached a
patch for this to this email. Please consider it for inclusion into
9.5. The syntax is:

DROP PRIVILEGES OWNED BY role [, ...]

I at some point decided to implement it as a new command instead of
changing DropOwnedStmt, and I think that might have been a mistake. It
might have made more sense to instead teach DROP OWNED to accept a
specification of which things to drop. But the proposal is more
important than such details, I think.

.marko