def _update_nulls_to_default(self, params, field):
        default = field.get_db_prep_save(field.get_default(), connection=self._get_connection())
        self.execute('UPDATE %(table_name)s SET %(column)s=%%s WHERE %(column)s IS NULL' % params, [default])
Builds dig factory
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/South-1.0.2/south/db/generic.py/DatabaseOperations._update_nulls_to_default--crossover with--dataset/ETHPy150Open tuturto/pyherc/src/pyherc/test/builders/action.py/DigFactoryBuilder.build