You’re talking about RelOptCostFactory, right? I don’t think there is any documentation. Sorry.
I found this: https://groups.google.com/forum/#!topic/optiq-dev/Q0_ix4fyivs <https://groups.google.com/forum/#!topic/optiq-dev/Q0_ix4fyivs> Julian > On Feb 28, 2017, at 10:29 PM, Hussain Pirosha <hussain.piro...@impetus.co.in> > wrote: > > Hi Everyone, > > I was looking for some documentation/example on plugging in a cost factory. > Once the logical plan is converted to actual execution plan, what all api's > are used by the planner in calculating cost. > > Any pointers regarding the working of cost factory and how it is used by a > planner shall be helpful. > > Thanks, > Hussain > > > ________________________________ > > > > > > > NOTE: This message may contain information that is confidential, proprietary, > privileged or otherwise protected by law. The message is intended solely for > the named addressee. If received in error, please destroy and notify the > sender. Any use of this email is prohibited when received in error. Impetus > does not represent, warrant and/or guarantee, that the integrity of this > communication has been maintained nor that the communication is free of > errors, virus, interception or interference.
