On Jun 3, 2011 4:20 PM, "Tom Lane" <t...@sss.pgh.pa.us> wrote: > > > [ view definition now fails due to multiple "id_a" columns ] > > I'm inclined to write this off as "so don't do that". There's nothing > that pg_dump can do to make this work: it has to use the USING syntax > for the join, and that doesn't offer any way to qualify the column name > on just one side.
There's nothing stopping us from adding a nonstandard syntax to cover precisely the information needed to resolve this case when dumping. For example we could support USING (a.a=b.a) or ON (a.a=b.a as a) We could use it only in this case where there's ambiguity too so it wouldn't clutter people's dumps. That said it isn't very appetizing a change to backport so it doesn't do much for the OP ...
