Hi Makis, You can use HepPlanner and your customized transoformation rule to rewrite the optimized plan. Top-down or Bottom-up can also be specified. Many systems have this kind of post processing phase.
- Haisheng ------------------------------------------------------------------ 发件人：Serafeim (Makis) Papadias<[email protected]> 日 期：2019年11月13日 05:37:37 收件人：<[email protected]> 主 题：Top-down pass of an optimized plan Dear all, I am performing a Volcano optimisation pass first and I receive the root of the optimised plan from the standard Program in [1]. Afterwards, I want to perform a top-down pass to the optimised plan and change it a bit by placing certain operators at specific points. Do you have any ideas on how to do this properly in Calcite? Thanks in advance. Best, Makis [1] — https://calcite.apache.org/apidocs/org/apache/calcite/tools/Programs.html <https://calcite.apache.org/apidocs/org/apache/calcite/tools/Programs.html>
