Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/10762#discussion_r51182690 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicOperators.scala --- @@ -171,13 +171,17 @@ case class Join( def selfJoinResolved: Boolean = left.outputSet.intersect(right.outputSet).isEmpty - // Joins are only resolved if they don't introduce ambiguous expression ids. - override lazy val resolved: Boolean = { + lazy val partlyResolved: Boolean = { childrenResolved && expressions.forall(_.resolved) && selfJoinResolved && condition.forall(_.dataType == BooleanType) } + // Joins are only resolved if they don't introduce ambiguous expression ids. --- End diff -- 1. add a blank line above 2. we need to explain what the different resolution modes are. 3. I don't think partlyResolved is a good name -- it doesn't really explain anything, e.g. which part?
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