hequn8128 commented on issue #6987: [FLINK-8897] [table] Fix rowtime materialization issues for filters and joins URL: https://github.com/apache/flink/pull/6987#issuecomment-435747112 Hi, @twalthr A neat fix! LGTM. And thanks for adding the logic that throw an exception in `DataStreamJoinRule` when the rule doesn't match which I think makes the exceptions more friendly to users. How about add similar logic to `DataStreamWindowJoinRule`, i.e, throw an exception when window bound has been defined while contains rowtime field in the output. Best, Hequn
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