SQL语句中: 的“=:”是什么意思,例如zy_detail_charge_force.data_month=:arg_data_month。急急急·!
说明白点,如果zy_detail_charge_force.data_month=9,arg_data_month =3,返回 zy_detail_charge_force.data_month,那结果是多少呢?