Re: planner, how difficult to ...

Peter Eisentraut wrote:

>Keith Bottner wrote:
>  
>
>>How integrated is the planner into the database? Put another way, how
>>hard would it be to separate the planner from the core database in
>>such a way that it could be easily replaced either during compilation
>>or even better with a runtime setting?
>>    
>>
>
>The planner is configurable at run time in many ways.  But maybe you 
>want to start by explaining your problem instead of presuming a 
>solution.
>  
>

you can already "change" the planner.
just use GEQO instead of  exhaustive searching,
why would you want to change the existing planner?
implementing a rule based planner like the one Oracle had is not a good 
idea ;).
   regards,
      Hans