> > >     select usename as aaa from pg_user order by usename;
> > > will produce 2 column names: "aaa" and "usename". Is this normal?
> > 
> > No.  I am not seeing it here with sources from 12 May.  I am guessing
> > this has something to do with Jan's recent fixes for group by/order by
> > rewrites.  Do you see it when you use a plain table, rather than a view?
> 
> I see it with a plain table too.
I just did a make clean, initdb, etc, and got:
test=> select usename as aaa from pg_user order by usename;aaa     --------postgres(1 row)
Looks good to me.
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