add back resolved for Alias

apache · Apr 17, 2015 · c2a5132 · c2a5132
1 parent 556e982
commit c2a5132
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
@@ -112,6 +112,8 @@ case class Alias(child: Expression, name: String)(
   extends NamedExpression with trees.UnaryNode[Expression] {
 
   override type EvaluatedType = Any
+  // Alias(Generator, xx) need to be transformed into Generate(generator, ...)
+  override lazy val resolved = childrenResolved && !child.isInstanceOf[Generator]
 
   override def eval(input: Row): Any = child.eval(input)