Github user scwf commented on a diff in the pull request:
https://github.com/apache/spark/pull/3431#discussion_r22369155
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/sources/ddl.scala ---
@@ -99,8 +209,15 @@ private[sql] case class CreateTableUsing(
sys.error(s"Failed to load class for data source: $provider")
}
}
- val dataSource =
clazz.newInstance().asInstanceOf[org.apache.spark.sql.sources.RelationProvider]
- val relation = dataSource.createRelation(sqlContext, new
CaseInsensitiveMap(options))
+ val dataSource =
+
clazz.newInstance().asInstanceOf[org.apache.spark.sql.sources.SchemaRelationProvider]
--- End diff --
Ok so if users do not specify schema in ddl, go with
```RelationProvider```, otherwith go with ```SchemaRelationProvider```
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