Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/1586#discussion_r15390509
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala
---
@@ -208,6 +208,69 @@ case class EndsWith(left: Expression, right:
Expression)
def compare(l: String, r: String) = l.endsWith(r)
}
+trait LengthExpression {
+ self: UnaryExpression =>
+ type EvaluatedType = Any
+
+ def dataType = IntegerType
+ override def foldable = child.foldable
+ def nullable = child.nullable
+
+ override def eval(input: Row): EvaluatedType = {
+ val string = child.eval(input)
+// println(s"eval=$string")
--- End diff --
Remove commented code.
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