cloud-fan commented on a change in pull request #29830:
URL: https://github.com/apache/spark/pull/29830#discussion_r492564752
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File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriterV2.scala
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@@ -153,6 +153,7 @@ final class DataFrameWriterV2[T] private[sql](table:
String, ds: Dataset[T])
*/
@throws(classOf[NoSuchTableException])
def append(): Unit = {
+ assertNoTempView("append")
val append = loadTable(catalog, identifier) match {
Review comment:
I'm thinking of a more aggressive refactor, which creates an unresolved
logical plan here and leaves the table/temp view lookup to the analyzer.
For example, here we can just create
`AppendData.byName(UnresolvedRelation(...))`.
By doing this, we can make the framework more clear: the API layer should
just create logical plans, other works should be done by the analyzer and query
planner.
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