Append a given RDD or rows into the relation.
Return the actual relation to be used for insertion into the relation
or None if sourceSchema cannot be inserted.
Return the actual relation to be used for insertion into the relation
or None if sourceSchema cannot be inserted.
::DeveloperApi
An extension to
InsertableRelationthat allows for data to be inserted (possibily having different schema) into the target relation after comparing against the result ofinsertSchema.