Re: Design: Escort info from WHERE clause to executor?

peter.trautmeier@gmx.de wrote:
> To sum up, I am looking for a (decently efficient) scheme that is able to
> 
> (1) pass arbitrary conditional expressions from WHERE to the executor in a structure preserving way. 
> (2) annotate arbitrary expressions with weights that survive on its way from the parser to the executor.
> (3) access the logical value of particular subexpressions.
> 
> I have some basic ideas how at least some of the requirements might be achieved. But as I am not totally satisfied
withmy ideas I hope you can provide me with some fresh input.
 

Why? What are you trying to achieve?

-- Heikki Linnakangas EnterpriseDB   http://www.enterprisedb.com