Re: Compatibility types, type aliases, and distinct types

On Monday 18 August 2008 17:26:16 Tom Lane wrote:
> > This feature by itself could be quite useful, and then we could simply
> > add something like
> >     CREATE TYPE newtype AS oldtype WITH CASTS;
>
> This seems like a great way to get lost in "ambiguous function" hell ...

I don't understand this point.  No new overloaded functions are being defined.