Github user marmbrus commented on a diff in the pull request: https://github.com/apache/spark/pull/1750#discussion_r15911755 --- Diff: sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveQl.scala --- @@ -935,6 +936,7 @@ private[hive] object HiveQl { case Token(DIV(), left :: right:: Nil) => Cast(Divide(nodeToExpr(left), nodeToExpr(right)), LongType) case Token("%", left :: right:: Nil) => Remainder(nodeToExpr(left), nodeToExpr(right)) + case Token("TOK_FUNCTION", Token(SQRT(), Nil) :: arg :: Nil) => Sqrt(nodeToExpr(arg)) --- End diff -- I'd block other reimplimentations until we know how to do type coersion as they are going to cause regressions over current behavior. Regarding the type-coersion, it would be great to discuss the interface you are thinking of before you get too far into implementation as I think this is a pretty complex problem.
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