ulysses-you opened a new pull request #25464: [SPARK-28746][SQL] Add partitionby hint for sql queries URL: https://github.com/apache/spark/pull/25464 ## What changes were proposed in this pull request? Now, `RepartitionByExpression` is allowed at Dataset method `Dataset.repartition()`. But in spark sql, we do not have an equivalent functionality. In hive, we can use `distribute by`, so it's worth to add a hint to support such function. Similar jira [SPARK-24940](https://issues.apache.org/jira/browse/SPARK-24940) ## How was this patch tested? UT
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