BTW, I experimented with that a little bit and found that the relmapper is not really the stumbling block, at least not after applying this one-line patch:http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=f70f095c9096d5e2689e8d79172b37b57a84e51b
pgsql-general by date:
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