oracle去除重复数据sql
?
delete table1 where rowid not in ( 2select max(rowid) from table1 group by col1 ,col2,col3 ) 发布时间： 2012-07-02 17:46:22 作者： rapoo
oracle去除重复数据sql
?
delete table1 where rowid not in ( 2select max(rowid) from table1 group by col1 ,col2,col3 )