查找表里面重复的数据

第一种办法：

 

                 运用存储过程，不过那样比较麻烦。

第二种方法：

                用sql语句：

 

                     select t.account_number,t.insurance_date
                                                                             from i_net_value t
                                         where t.rowid !=

                       (select max(t.rowid)
                                   from i_net_value b
                                     where b.account_number = t.account_number and
                                                    b.insurance_date = t.insurance_date)