Changing sql streaming errors.

Adding content-disposition, so clients using the web front end will see the error.
Changing the status code to 200, because at least one user-agent wouldn't show the file if it had a status of 400

sqlshare_rest/test/api/download.py

@@ -92,7 +92,7 @@ def test_bad_query(self):
 
         download_url = response["Location"]
         response2 = self.client.get(download_url, content_type='application/json')
-        self.assertEqual(response2.status_code, 400)
+        self.assertEqual(response2.status_code, 200)
 
 
         if is_sqlite3():
@@ -104,7 +104,7 @@ def test_bad_query(self):
 
         download_url = response["Location"]
         response2 = self.client.get(download_url, content_type='application/json')
-        self.assertEqual(response2.status_code, 400)
+        self.assertEqual(response2.status_code, 200)
 
     def test_bad_download(self):
         owner = "query_user1"

sqlshare_rest/test/api/sql.py

@@ -54,12 +54,12 @@ def test_running(self):
 
         with LogCapture() as l:
             response = self.client.post(url, { "sql": "SELECT (1" }, **auth_headers)
-            self.assertEquals(response.status_code, 400)
+            self.assertEquals(response.status_code, 200)
             self.assertTrue(self._has_log(l, user, None, 'sqlshare_rest.views.sql', 'INFO', 'Running SQL: SELECT (1'))
 
 
         response = self.client.post(url, { }, **auth_headers)
-        self.assertEquals(response.status_code, 400)
+        self.assertEquals(response.status_code, 200)
 
         response = self.client.post(url, { "sql": "SELECT (1), (2)" }, **auth_headers)
         self.assertEquals(response.status_code, 200)

sqlshare_rest/views/sql.py

@@ -44,7 +44,9 @@ def response_for_query(sql, user, download_name):
         return response
     except Exception as ex:
         response = HttpResponse(str(ex))
-        response.status_code = 400
+        response.status_code = 200
+        disposition = 'attachment; filename="%s"' % download_name
+        response['Content-Disposition'] = disposition
         return response