Re: RFC: Restructuring pg_aggregate

Hiroshi Inoue wrote:
> > It seems to me that whatever we do
> > will require some kind of client breakage.
> 
> Physical/logical attnum approach was mainly to not break
> clients. I implemented it on trial but the implementation
> was hard to maintain unfortunately. It's pretty difficult
> to decide whether the number is physical or logical in
> many cases.

How many cases do we have that use logical numering?  Hiroshi, I know
you are the expert on this.  I know 'SELECT *' uses it, but are their
other places that need to know about the logical ordering of the
columns?

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