Github user dilipbiswal commented on a diff in the pull request:
https://github.com/apache/spark/pull/11297#discussion_r56101653
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -1339,43 +1339,68 @@ class Analyzer(
*/
object ResolveNaturalJoin extends Rule[LogicalPlan] {
override def apply(plan: LogicalPlan): LogicalPlan = plan
resolveOperators {
+ case j @ Join(left, right, UsingJoin(joinType, usingCols), condition)
+ if left.resolved && right.resolved =>
+ // Resolve the column names referenced in using clause from both
the legs of join.
+ val lCols = usingCols.flatMap(col => left.resolveQuoted(col.name,
resolver))
+ val rCols = usingCols.flatMap(col => right.resolveQuoted(col.name,
resolver))
+ if ((lCols.length == usingCols.length) && (rCols.length ==
usingCols.length))
+ {
--- End diff --
ok. Will make the change.
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