godfreyhe commented on issue #9146: [FLINK-13284] [table-planner-blink] Correct some builtin functions' r… URL: https://github.com/apache/flink/pull/9146#issuecomment-512651957 Thanks for this PR @lincoln-lil . for stream job, I think "return null" is the general case (maybe some case users also want "throw exception" when processing illegal data). while for batch job, "throw exception" is more general ?! for the long term, maybe we should add a config to let users choose the mode. for this PR, it looks good to me.
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