JingsongLi commented on issue #10989: [FLINK-15840][table-planner-blink] ClassCastException is thrown when use tEnv.from for temp/catalog table URL: https://github.com/apache/flink/pull/10989#issuecomment-581090904 Hi @wuchong , you can take a look to my solution 1, I think that is what are you mean. We don't need `FlinkToRelContext` any more, we can get `FlinkPlannerImpl` directly from `FlinkContext`. As I said, I think `FlinkToRelContext` is a bad way. I wanted to do that way. But discussed with @danny0405 offline: - Support computed column and watermark(I don't think there are some difference between computed column and watermark) in table api is not the goal of 1.10. - "Separate the computed column translation to parser stage" is his plan to do in 1.11.
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