def format_from_hint_text(self, sqltext, table, hint, iscrud):
        if hint.upper() != 'ONLY':
            raise exc.CompileError("Unrecognized hint: %r" % hint)
        return "ONLY " + sqltext
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/base.py/PGCompiler.format_from_hint_text/original