diff --git a/app/api/resources/device.py b/app/api/resources/device.py
index 50382c9..9a17b30 100644
--- a/app/api/resources/device.py
+++ b/app/api/resources/device.py
@@ -115,7 +115,8 @@ class DeviceRecordingQueryResource(ProtectedResource):
     def post(self, args, device_id):
         validate_device_ownership(device_id)
         try:
-            return devices.run_custom_query(device_id, args), 200
+            return {'content':
+                    devices.run_custom_query(device_id, args)}, 200
         except ValueError as e:
             abort(400, message=str(e), status='error')
 
diff --git a/app/api/resources/swagger/create_device_recording_query_spec.yaml b/app/api/resources/swagger/create_device_recording_query_spec.yaml
index 74b3e36..453ea36 100644
--- a/app/api/resources/swagger/create_device_recording_query_spec.yaml
+++ b/app/api/resources/swagger/create_device_recording_query_spec.yaml
@@ -17,4 +17,10 @@ responses:
   200:
     description: Success
     schema:
-      type: array
+      type: object
+      required:
+        - content
+      properties:
+        content:
+          type: array
+
diff --git a/app/devices/api.py b/app/devices/api.py
index 8808c45..3c63856 100644
--- a/app/devices/api.py
+++ b/app/devices/api.py
@@ -284,7 +284,13 @@ def run_custom_query(device_id, request):
     resulting_query = jsonql.run_query_on(Recording.query.with_entities(),
                                           recording_field_provider,
                                           **request)
-    print("Resulting query: " + str(resulting_query))
-    result = resulting_query.filter(Recording.device_id == device_id).all()
-    print("RESULT: " + str(result))
-    return result
+    final_query = resulting_query.filter(Recording.device_id == device_id)
+    resulting_columns = final_query.column_descriptions
+    result = final_query.all()
+    formatted_result = []
+    for row in result:
+        formatted_row = {}
+        for idx, col in enumerate(row):
+            formatted_row[resulting_columns[idx]['name']] = col
+        formatted_result.append(formatted_row)
+    return formatted_result
diff --git a/app/jsonql/api.py b/app/jsonql/api.py
index 99e12d4..0b7efc9 100644
--- a/app/jsonql/api.py
+++ b/app/jsonql/api.py
@@ -2,7 +2,7 @@ from app.core import db
 
 GROUPS = ['sum', 'avg', 'count']
 FILTERS = ['$gt', '$lt', '$eq']
-PERIODS = ['year', 'month', 'week', 'day']
+PERIODS = ['year', 'month', 'week', 'day', 'hour', 'minute', 'second']
 
 
 def run_query_on(query_object, field_provider, **kwargs):
@@ -12,9 +12,20 @@ def run_query_on(query_object, field_provider, **kwargs):
     print('Starting with args: ' + str(kwargs))
 
     if selections is not None:
+        if groups is not None:
+            for group in groups.keys():
+                entities.append(
+                        get_group(
+                            field_provider(group),
+                            groups[group]
+                            ).label(
+                                'group_' + str(group)  # + '_' + groups[group]
+                                )
+                            )
+
         for selection in selections.keys():
             entities.append(get_column(selections[selection],
-                            field_provider(selection)))
+                            field_provider(selection)).label(selection))
 
         print('New entities: ' + str(entities))
         query_object = query_object.with_entities(*entities)
@@ -29,8 +40,7 @@ def run_query_on(query_object, field_provider, **kwargs):
 
     if groups is not None:
         for group in groups.keys():
-            query_object = query_object.group_by(
-                    get_group(field_provider(group), groups[group]))
+            query_object = query_object.group_by('group_' + str(group))
 
     return query_object
 
diff --git a/config.py b/config.py
index 0bff46a..16725e8 100644
--- a/config.py
+++ b/config.py
@@ -2,7 +2,7 @@ import os
 
 # App configuration
 DEBUG = os.environ['DEBUG']
-APP_VERSION = '0.3.4'
+APP_VERSION = '0.3.5'
 
 # Define the application directory
 BASE_DIR = os.path.abspath(os.path.dirname(__file__))