
1,2都可以用group by:
select * from users group by names;
或
select names, id from users group by names;
或
。。。
补充:
select * 就可以得到所有的了,你有试过上面我写的吗

1,2都可以用group by:
select * from users group by names;
或
select names, id from users group by names;
或
。。。
补充:
select * 就可以得到所有的了,你有试过上面我写的吗