dal.py 文件源码

def _select(self, *fields, **attributes):
        adapter = self.db._adapter
        tablenames = adapter.tables(self.query,
                                    attributes.get('join',None),
                                    attributes.get('left',None),
                                    attributes.get('orderby',None),
                                    attributes.get('groupby',None))
        fields = adapter.expand_all(fields, tablenames)
        return adapter._select(self.query,fields,attributes)