twalthr commented on issue #7664: [FLINK-11449][table] Uncouple the Expression class from RexNodes. URL: https://github.com/apache/flink/pull/7664#issuecomment-468228705 FYI: I merged the first commit in 8e3985110693d2999a4b827929891ca2e6575cd2. I will continue merging the commits step by step.
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