EnricoMi commented on code in PR #37407:
URL: https://github.com/apache/spark/pull/37407#discussion_r988686782
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/errors/QueryCompilationErrors.scala:
##########
@@ -101,16 +101,45 @@ private[sql] object QueryCompilationErrors extends
QueryErrorsBase {
"pivotType" -> pivotCol.dataType.catalogString))
}
+ def unpivotRequiresAttributes(given: String,
+ empty: String,
+ expressions: Seq[NamedExpression]): Throwable
= {
+ val types = expressions.groupBy(_.getClass.getSimpleName)
+ .mapValues(exprs => exprs.map(expr => expr.toString.replaceAll("#\\d+",
"")).sorted)
+ .mapValues(exprs => if (exprs.length > 3) exprs.take(3) :+ "..." else
exprs)
+ .toList.sortBy(_._1)
+ .map { case (className, exprs) => s"$className (${exprs.mkString(",
")})" }
Review Comment:
Done in 2c8f53df though `.map(toSQLExpr)` gives better results
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