I'm studying Calcite recently and I found that RelNode Tree would be converted to a DAG composed by HepRelVertex and Edge before the RBO rules execution, and I don't understand why this step is necessary since RelNode tree is a DAG essentially.
- What's the necessity of the HepRelVertex used in HepP... Ayaka Kamisato
- Re: What's the necessity of the HepRelVertex use... Benchao Li
- Re: What's the necessity of the HepRelVertex... Alessandro Solimando
- Re: What's the necessity of the HepRelVe... Julian Hyde
