Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/6874#discussion_r33525785
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -747,9 +747,7 @@ object functions {
*/
@scala.annotation.varargs
def struct(cols: Column*): Column = {
--- End diff --
The documentation above needs to be updated and should specify what happens
when the columns are unnamed.
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