07ARB commented on issue #26477: [SPARK-29776][SQL] rpad and lpad should return NULL when padstring parameter is empty URL: https://github.com/apache/spark/pull/26477#issuecomment-569389259 Thank you all, for such a good discussion, If we are not finding strong reason to change old behaviours, then we can close this PR. One more issue related to Lpad/Rpad, please review https://github.com/apache/spark/pull/27024
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