I wrote:
> I'll go ahead now in little steps.
>
> 1. Get rid of the TLE copy in GroupClause.
Done. GroupClause now identifies the TLE by a number which is
placed into the Resdom by parser/rewriter.
New initdb required because of modifications in node
print/read functions.
>
> 2. Move the targetlist expansion into the rule system.
Not required anymore AFAICS. Instead I modified the
targetlist preprocessing in the planner so that junk
attributes used by group clauses get added again to the
expanded list.
Jan
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