twalthr commented on issue #7664: [FLINK-11449][table] Uncouple the Expression class from RexNodes. URL: https://github.com/apache/flink/pull/7664#issuecomment-466012382 Thanks for the update @sunjincheng121. The commits look much cleaner now. In order to speed up the process I will apply the final polishing directly in a separate branch. I will come back to you with my suggestions and minor improvements shortly. We can then discuss them again. Thanks.
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