def typeinfo(self, sqltype=None):
        cur = self.begin()
        cur.gettypeinfo(sqltype)
        self.commit(cur)
        self.display()
For some reason `missing_deriv_policy` gets resurrected.
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/dbexts.py/dbexts.typeinfo--crossover with--dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/driver.py/Driver.__deepcopy__