asp两表联查重复的数据如何删除

asp两表联查重复的数据怎么删除
8 OYE111208144334 
9 OYE111208144334  
10 OYE111208144334  
怎么把下面的两行数据给删除了啊，请各位前辈指教。
用的是mysql

[解决办法]

SQL code

mysql> select * from table1;+------+------+----------+| id   | oid  | userName |+------+------+----------+| 01   | oye1 | user1    || 02   | oye2 | user2    |+------+------+----------+2 rows in set (0.06 sec)mysql> select * from table2;+------+------+-------+| id   | oid  | gname |+------+------+-------+| 01   | oye1 | aaa   || 02   | oye1 | bbb   || 03   | oye2 | ddd   || 04   | oye2 | ggg   |+------+------+-------+4 rows in set (0.00 sec)mysql> select table1.oid,group_concat(gname SEPARATOR  ''),userName    -> from table1 ,table2    -> where table1.oid=table2.oid    -> group by table1.oid;+------+-----------------------------------+----------+| oid  | group_concat(gname SEPARATOR  '') | userName |+------+-----------------------------------+----------+| oye1 | aaabbb                            | user1    || oye2 | dddggg                            | user2    |+------+-----------------------------------+----------+2 rows in set (0.01 sec)mysql>