Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/17713#discussion_r115154162 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala --- @@ -137,32 +137,46 @@ case class In(value: Expression, list: Seq[Expression]) extends Predicate { require(list != null, "list should not be null") override def checkInputDataTypes(): TypeCheckResult = { list match { - case ListQuery(sub, _, _) :: Nil => + case ListQuery(sub, _, exprId) :: Nil => val valExprs = value match { case cns: CreateNamedStruct => cns.valExprs case expr => Seq(expr) } - - val mismatchedColumns = valExprs.zip(sub.output).flatMap { - case (l, r) if l.dataType != r.dataType => - s"(${l.sql}:${l.dataType.catalogString}, ${r.sql}:${r.dataType.catalogString})" - case _ => None - } - - if (mismatchedColumns.nonEmpty) { + if (valExprs.length != sub.output.length) { TypeCheckResult.TypeCheckFailure( s""" - |The data type of one or more elements in the left hand side of an IN subquery - |is not compatible with the data type of the output of the subquery - |Mismatched columns: - |[${mismatchedColumns.mkString(", ")}] - |Left side: - |[${valExprs.map(_.dataType.catalogString).mkString(", ")}]. - |Right side: - |[${sub.output.map(_.dataType.catalogString).mkString(", ")}]. + |The number of columns the left hand side of an IN subquery does not match the + |number of columns in the output of subquery. + |#columns in left hand side: ${valExprs.length}. + |#columns in right hand side: ${sub.output.length}. + |Left side columns: + |[${valExprs.map(_.sql).mkString(", ")}]. + |Right side columns: + |[${sub.output.map(_.sql).mkString(", ")}]. + |Subquery expression id: #${exprId.id} --- End diff -- `Subquery expression id: #${exprId.id}` does not help to the end users, I think
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