[SPARK-2561][SQL] Fix apply schema

We need to use the analyzed attributes otherwise we end up with a tree that will never resolve.

Author: Michael Armbrust <michael@databricks.com>

Closes #1470 from marmbrus/fixApplySchema and squashes the following commits:

f968195 [Michael Armbrust] Use analyzed attributes when applying the schema.
4969015 [Michael Armbrust] Add test case.

sql/core/src/main/scala/org/apache/spark/sql/SchemaRDD.scala

@@ -430,7 +430,7 @@ class SchemaRDD(
    * @group schema
    */
   private def applySchema(rdd: RDD[Row]): SchemaRDD = {
-    new SchemaRDD(sqlContext, SparkLogicalPlan(ExistingRdd(logicalPlan.output, rdd)))
+    new SchemaRDD(sqlContext, SparkLogicalPlan(ExistingRdd(queryExecution.analyzed.output, rdd)))
   }
 
   // =======================================================================

sql/core/src/test/scala/org/apache/spark/sql/DslQuerySuite.scala

@@ -33,6 +33,12 @@ class DslQuerySuite extends QueryTest {
       testData.collect().toSeq)
   }
 
+  test("repartition") {
+    checkAnswer(
+      testData.select('key).repartition(10).select('key),
+      testData.select('key).collect().toSeq)
+  }
+
   test("agg") {
     checkAnswer(
       testData2.groupBy('a)('a, Sum('b)),