Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/1211#discussion_r14258173
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala ---
@@ -108,6 +108,24 @@ package object dsl {
implicit def symbolToUnresolvedAttribute(s: Symbol) =
analysis.UnresolvedAttribute(s.name)
+ def sum(e: Expression) = Sum(e)
+ def sum(d: DistinctExpression) = SumDistinct(d.expression)
--- End diff --
You version is closer to SQL I guess, but I'm wary of too much implicit
magic (there is already a lot!).
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