viirya commented on a change in pull request #28996:
URL: https://github.com/apache/spark/pull/28996#discussion_r453447856
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File path: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala
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@@ -2048,19 +2088,34 @@ class Dataset[T] private[sql](
// Builds a project list for `other` based on `logicalPlan` output names
val rightProjectList = leftOutputAttrs.map { lattr =>
rightOutputAttrs.find { rattr => resolver(lattr.name, rattr.name)
}.getOrElse {
- throw new AnalysisException(
- s"""Cannot resolve column name "${lattr.name}" among """ +
- s"""(${rightOutputAttrs.map(_.name).mkString(", ")})""")
+ if (allowMissingColumns) {
Review comment:
No, currently it doesn't.
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