So, barring objections, I'll go make this happen. What do we want to call the intermediate constraint_exclusion value? The first thing that comes to mind is constraint_exclusion = 'child', but perhaps someone has a better idea.
This is terrific. I've actually been turning c_e on and off by ROLE property at some sites because of the penalty on one-liner web queries. This would solve that.
I don't like "child", though, which is not a keyword we use definitively elsewhere. I'd suggest "INHERITED" or something based on "inherit", because that's the actual keyword we use when we create a partition.
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