Calcite also has a relatively-unknown web tool for plan visualization that lets you step through execution. It's a method from "RuleMatchVisualizer": https://

Calcite also has a relatively-unknown web tool for plan visualization that lets you step through execution. It's a method from "RuleMatchVisualizer": https://github.com/apache/calcite/blob/36f6dddd894b8b79edeb568982251dec8c9d2fc0/core/src/main/java/org/apache/calcite/plan/visualizer/RuleMatchVisualizer.java#L62-L78 https://github.com/apache/calcite/blob/36f6dddd894b8b79edeb5... Here's a screenshot of what the webpage looks like, for anyone curious: https://github.com/GavinRay97/GraphQLCalcite/blob/92b18a850d5546403b9760d96dc5b3a59533f3ca/readme-images/calcite-query-plan-example.png https://github.com/GavinRay97/GraphQLCalcite/blob/92b18a850d...