Github user wzhfy commented on a diff in the pull request: https://github.com/apache/spark/pull/17100#discussion_r146230295 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala --- @@ -270,12 +270,27 @@ trait CheckAnalysis extends PredicateHelper { operator match { case o if o.children.nonEmpty && o.missingInput.nonEmpty => + val resolver = plan.conf.resolver + val attrsWithSameName = o.missingInput.filter(missing => + o.inputSet.exists(input => resolver(missing.name, input.name))) + val repeatedNameHint = if (attrsWithSameName.nonEmpty) { + val commonNames = attrsWithSameName.map(_.name).mkString(",") + s"""|Please check attribute(s) `$commonNames`, they seem to appear in two + |different input operators, with the same name.""".stripMargin + } else { + "" + } + val missingAttributes = o.missingInput.mkString(",") - val input = o.inputSet.mkString(",") + val availableAttributes = o.inputSet.mkString(",") --- End diff -- could you revert this change? original `input` is ok for me.
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