xzh_dz created CALCITE-4400: ------------------------------- Summary: A tool method explain Calc operator Key: CALCITE-4400 URL: https://issues.apache.org/jira/browse/CALCITE-4400 Project: Calcite Issue Type: Wish Reporter: xzh_dz
`Calc` is an operator combining `Project` and `Filter`. In a project development, `Calc` operator is usually used to simplify the operator of `Project` and `Filter`, and facilitate the optimization of relational algebra. Usually, `Calc` operator is needed to process `Project` and `Filter` information.Explain Calc operator is often needed in materialized view recognition.A tool is needed to explain Calc to get `Project` (RexNodes) and `Filter` (RexNode). In relation algebra optimization, it will be very convenient to process `Calc` operator. -- This message was sent by Atlassian Jira (v8.3.4#803005)