zhengruifeng commented on PR #38841:
URL: https://github.com/apache/spark/pull/38841#issuecomment-1331575966
this pr itself lgtm, but there are behavior changes in `groupby.{min, max,
sum, avg, mean}`:
1, pyspark and scala api only accept string `*str` / `string*`
2, pyspark and scala api will check the schema, if the datatype is
unexpected, it fails;
3, if the no input column, it will check the schema and select all the
numeric columns.
shall we add a dedicate proto for `groupby.{min, max, sum, avg, mean}`?
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