def modify_insert_params(self, placeholders, params):
        # This code doesn't work for bulk insert cases.
        assert len(placeholders) == 1
        return [[param for pholder,param
                 in izip(placeholders[0], params[0]) if pholder != 'NULL'], ]
Drop out insert parameters for NULL placeholder. Needed for Oracle Spatial
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/gis/db/backends/oracle/operations.py/OracleOperations.modify_insert_params