gengliangwang commented on code in PR #36077:
URL: https://github.com/apache/spark/pull/36077#discussion_r844123690
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveDefaultColumns.scala:
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@@ -239,12 +263,40 @@ case class ResolveDefaultColumns(
val lookup = catalog.lookupRelation(tableName)
lookup match {
case SubqueryAlias(_, r: UnresolvedCatalogRelation) =>
- Some(StructType(r.tableMeta.schema.fields.dropRight(
- enclosingInsert.get.partitionSpec.size)))
- case _ => None
+ StructType(r.tableMeta.schema.fields.dropRight(
+ enclosingInsert.get.partitionSpec.size))
+ case _ => return None
}
} catch {
- case _: NoSuchTableException => None
+ case _: AnalysisException => return None
+ }
+ // Rearrange the columns in the result schema to match the order of the
explicit column list,
+ // if any.
+ val userSpecifiedCols: Seq[String] = enclosingInsert.get.userSpecifiedCols
+ if (userSpecifiedCols.isEmpty) {
+ return Some(schema)
+ }
+ val colNamesToFields: Map[String, StructField] =
+ schema.fields.map {
+ field: StructField => field.name -> field
+ }.toMap
+ val userSpecifiedFields: Seq[StructField] =
+ userSpecifiedCols.map {
+ name: String => colNamesToFields.getOrElse(name, return Some(schema))
+ }
+ val userSpecifiedColNames: Set[String] = userSpecifiedCols.toSet
+ val nonUserSpecifiedFields: Seq[StructField] =
+ schema.fields.filter {
+ field => !userSpecifiedColNames.contains(field.name)
+ }
+ if (SQLConf.get.useNullsForMissingDefaultColumnValues) {
Review Comment:
this seems duplicated with `getDefaultExpressions`
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