dal.py 文件源码

def count(self,query,distinct=None):
        if distinct:
            raise RuntimeError("COUNT DISTINCT not supported")
        if not isinstance(query,Query):
            raise SyntaxError("Not Supported")
        tablename = self.get_table(query)
        rows = self.select(query,[self.db[tablename]._id],{})
        return len(rows)