rdblue commented on a change in pull request #24832: [SPARK-27845][SQL]
DataSourceV2: InsertTable
URL: https://github.com/apache/spark/pull/24832#discussion_r300786525
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceResolution.scala
##########
@@ -118,6 +122,95 @@ case class DataSourceResolution(
if newColumns.forall(_.name.size == 1) =>
// only top-level adds are supported using AlterTableAddColumnsCommand
AlterTableAddColumnsCommand(table, newColumns.map(convertToStructField))
+
+ case i @
InsertTableStatement(UnresolvedRelation(CatalogObjectIdentifier(Some(catalog),
ident)),
+ _, _, _, _) if i.query.resolved =>
+ loadTable(catalog, ident)
+ .map(DataSourceV2Relation.create)
+ .map(table => {
+ // ifPartitionNotExists is append with validation, but validation is
not supported
+ if (i.ifPartitionNotExists) {
+ throw new AnalysisException(
+ s"Cannot write, IF NOT EXISTS is not supported for table:
${table.table.name}")
Review comment:
This uses `table` to refer to a `DataSourceV2Relation`, which causes this
awkward reference because the relation has an actual `table`:
`table.table.name`. It would be better to call the relation `rel` or `relation`.
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