考慮到這種SQL用到的還是比較多，故在此記錄一下。

問題  從表中刪除重複的記錄，考慮如下表結構資訊：

create table dupes (id integer,name varchar(10));
insert into dupes values(1,'NAPOLEON');
insert into dupes values(2,'DYNAMITE');
insert into dupes values(3,'DYNAMITE');
insert into dupes values(4,'SHE SELLS');
insert into dupes values(5,'SHE SELLS');
insert into dupes values(6,'SHE SELLS');
insert into dupes values(7,'SHE SELLS');
 

select * from dupes order by 1;

解決方案如下：

delete from dupes where id not in (select min(id) from dupes group by name)