Re: Patch for 8.5, transformationHook

On Saturday 18 April 2009 18:09:00 Pavel Stehule wrote:
> There are lot of things, that should be done with current grammar only
> on transformation stage. Currently pg do it now. There are lot of
> pseudo functions, that are specially transformed: least, greatest,
> coalesce. After hooking we should do some similar work from outer
> libraries.

There are surely other ways to accomplish this than an expression 
transformation hook.  Adding a property or two to the function definition to 
do what you want could do it.