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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/08/10 02:16:35 UTC

[GitHub] [spark] HyukjinKwon commented on pull request #28754: [SPARK-10520][SQL] Allow average out of DateType

HyukjinKwon commented on pull request #28754:
URL: https://github.com/apache/spark/pull/28754#issuecomment-671135969


   BTW, looks like most of DBMSes don't allow this. I checked quickly and seems ANSI doesn't allow this as well:
   > If AVG is specified and DT is exact numeric, then the declared type of the result is an implementation-defined exact numeric type with precision not less than the precision of DT and scale not less than the scale of DT.


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