maropu commented on a change in pull request #29695:
URL: https://github.com/apache/spark/pull/29695#discussion_r497911856
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceStrategy.scala
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@@ -643,6 +647,34 @@ object DataSourceStrategy {
(nonconvertiblePredicates ++ unhandledPredicates, pushedFilters,
handledFilters)
}
+ def translateAggregate(aggregates: AggregateExpression):
Option[AggregateFunc] = {
+
+ def columnAsString(e: Expression): String = e match {
+ case AttributeReference(name, _, _, _) => name
+ case Cast(child, _, _) => child match {
Review comment:
What if `SALARY` is a tiny int? Looks `sum(SALARY)` can have an overflow
easily in the datasource side.
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