Tom Lane wrote:
> "Heikki Linnakangas" <heikki(at)enterprisedb(dot)com> writes:
>> We should use range_table_walker, which knows how to descend into all
>> kinds of RTEs...
> Yeah, I had been thinking of that but didn't see an easy way to apply
> it; of course the answer is to use IncrementVarSublevelsUp_walker
> directly as you have here.
> Looks good except IncrementVarSublevelsUp_rtable really ought to have
> a comment. Please fix that, commit, and backpatch as needed.
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