Hi luchen.xu 'SlotCount' may mean how many QueryOperand and TargetOperand in an operand tree. Link to `org.apache.calcite.plan.SubstitutionVisitor.SlotCounter`
Hope it will help you Thanks XuRenhe 徐保荣 <[email protected]> 于2022年2月9日周三 15:25写道： > hello, > I'm reading code anout materialized views , This problems keeps > making me puzzled. > In the UnifyRule , what does SlotCount mean? can you give some > examples? > > I look forward to hearing from you very much > thanks > > > > > > rules transformation > Permalink > > >
