Github user liancheng commented on a diff in the pull request: https://github.com/apache/spark/pull/2397#discussion_r17648914 --- 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 -- (Probably my final comment on this PR :) ) As described in PR #2382, we shouldn't store analyzed logical plan when registering tables any more (see [here](https://github.com/apache/spark/pull/2382/files?diff=split#diff-5)). To prevent duplicated code, I'd suggest to import `SQLContext._` so that we can leverage [the implicit conversion](https://github.com/apache/spark/blob/008a5ed4808d1467b47c1d6fa4d950cc6c4976b7/sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala#L78-L85) from `LogicalPlan` to `SchemaRDD`, and then simply do this: ```scala sqlContext.executePlan(plan).logical.registerTempTable(tableName) ```
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