diff --git a/pipeline.py b/pipeline.py
index bbc54bc..87d2af6 100644
--- a/pipeline.py
+++ b/pipeline.py
@@ -79,7 +79,8 @@ class Components :
 		if 'columns' in _args and 'data' in _args :
 			_df = _args['data']
 			terms = _args['columns']
-			return [name for name in _df.columns if  np.sum( [int(field in  name )for field in terms ]) > 0 ]
+			return [name for name in _df.columns if  np.sum( [int(field in  name )for field in terms ])  ]
+			
 		return []
 	def set_gpu(self,**_args) :
 		if 'gpu' in _args :
@@ -247,7 +248,10 @@ class Components :
 			args['gpu'] = self.set_gpu(gpu=args['gpu'])
 		_info = {"module":"gan-prep","action":"prune","shape":{"rows":args['data'].shape[0],"columns":args['data'].shape[1]}}
 		logger.write(_info)
-		candidates = (data.maker.generate(**args))
+		if args['data'].shape[0] > 0 and args['data'].shape[1] > 0 :
+			candidates = (data.maker.generate(**args))
+		else:
+			candidate = [df]
 		if 'sql.BQWriter' in ostore['type'] :
 			#table = ".".join([ostore['['dataset'],args['context']])
 			# writer  = factory.instance(**ostore)