Allow empty results in Hive (from SET, eg) (apache#6695)

* Allow empty results in Hive (from SET, eg)

* Remove patch

* Merge heads

* Delete merge heads

(cherry picked from commit 0038881)
(cherry picked from commit e535817)

superset/db_engine_specs.py

@@ -1004,11 +1004,15 @@ def fetch_result_sets(cls, db, datasource_type):
 
     @classmethod
     def fetch_data(cls, cursor, limit):
+        import pyhive
         from TCLIService import ttypes
         state = cursor.poll()
         if state.operationState == ttypes.TOperationState.ERROR_STATE:
             raise Exception('Query error', state.errorMessage)
-        return super(HiveEngineSpec, cls).fetch_data(cursor, limit)
+        try:
+            return super(HiveEngineSpec, cls).fetch_data(cursor, limit)
+        except pyhive.exc.ProgrammingError:
+            return []
 
     @staticmethod
     def create_table_from_csv(form, table):