my7ym edited a comment on issue #1811: [CALCITE-3789] Support validation of UNNEST multiple array columns like Presto URL: https://github.com/apache/calcite/pull/1811#issuecomment-597447584 > We should also add a test case for at least one SqlToRelConverterTest. Will do it in the future if needed. I am still unclear that how this should be represented as RelNode. (discussed in https://issues.apache.org/jira/browse/CALCITE-3787) Is it OK for you? EDIT: Some other reasons: 1. We still plan to communicate with Presto using SQL. 2. RelNode -> SqlNode is not quite mature I believe, but I may be wrong there. 3. The optimization enabled by RelNode is helpful. But not a high-pri since Presto will also optimize the internal execution plan.
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