Github user ravipesala commented on a diff in the pull request:
https://github.com/apache/spark/pull/2397#discussion_r17707447
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/commands.scala ---
@@ -166,3 +166,20 @@ case class DescribeCommand(child: SparkPlan, output:
Seq[Attribute])(
child.output.map(field => Row(field.name, field.dataType.toString,
null))
}
}
+
+/**
+ * :: DeveloperApi ::
+ */
+@DeveloperApi
+case class CacheTableAsSelectCommand(tableName: String, plan: LogicalPlan)
+ extends LeafNode with Command {
+
+ override protected[sql] lazy val sideEffectResult = {
+ sqlContext.catalog.registerTable(None, tableName,
sqlContext.executePlan(plan).analyzed)
--- End diff --
It seems we cannot use the ```import org.apache.spark.sql.SQLContext._```
at the beginning of file to use implicit. Because there is no ```object```
defined for ```SQLContext``` and implicits are only part of ```class
SQLContext```. We can only use the import on instance like ```import
sqlContext._``` Please correct me if I am wrong.
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