Dear devs,
I am trying to use the HepPlanner, but apparently it does not apply
rules according to the cost model (in my case, it simply applies all
applicable rules).
Do I need the VolcanoPlanner to obtain a cost-based query transformation?
Best, Davide.
Ok,
thank you very much Julian, we'll try it out.
Best regards, Davide and Guohui.
On 14/02/18 19:42, Julian Hyde wrote:
It sounds like a good fit. Parse the SQL, translate to relational algebra,
apply some query transformation rules on the algebra.
If you have a few simple transformations
