tprelle commented on a change in pull request #31639:
URL: https://github.com/apache/spark/pull/31639#discussion_r583264905
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
##########
@@ -874,13 +874,29 @@ class SessionCatalog(
// the extra columns that we don't require), with UpCast (to make sure the
type change is
// safe) and Alias (to respect user-specified view column names) according
to the view schema
// in the catalog.
- val projectList = viewColumnNames.zip(metadata.schema).map { case (name,
field) =>
- Alias(UpCast(UnresolvedAttribute.quoted(name), field.dataType),
field.name)(
- explicitMetadata = Some(field.metadata))
+ val projectList = if (isTempView) {
+ viewColumnNames.zip(metadata.schema).map { case (name, field) =>
+ Alias(UpCast(UnresolvedAttribute.quoted(name), field.dataType),
field.name)(
+ explicitMetadata = Some(field.metadata))
+ }
+ } else {
+ viewColumnNames.zip(metadata.schema).
+ map { case (name, field) => innerStruct(Seq(), name, field)}
}
View(desc = metadata, isTempView = isTempView, child =
Project(projectList, parsedPlan))
}
+ private def innerStruct(parent : Seq[String], name : String,
+ field : StructField) : NamedExpression = {
+ field.dataType match {
+ case structType : StructType => Alias(CreateStruct.create(structType.map
{
Review comment:
Maybe but i dit not know if this making a huge difference, and i do not
found a way to check at this moment of the analysis of the code if the
references table is altered or not.
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