Github user hvanhovell commented on a diff in the pull request: https://github.com/apache/spark/pull/14355#discussion_r72391196 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala --- @@ -266,6 +266,13 @@ trait CheckAnalysis extends PredicateHelper { s"but one table has '${firstError.output.length}' columns and another table has " + s"'${s.children.head.output.length}' columns") + case Union(c) if c.exists(_.output.map(_.dataType) != c.head.output.map(_.dataType)) => + val firstError = c.find(_.output.map(_.dataType) != c.head.output.map(_.dataType)).get + failAnalysis( --- End diff -- It would be very useful to know which field(s) are causing trouble. Now I have to scan the list my self.
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org