已采纳回答 / Netflix这一年好厉害
t2是前面(SELECT goods_id,goods_name FROM tdb_goods GROUP BY goods_name HAVING count(goods_name) >= 2 ) 输出数据(也可以当成一个表)的别名
2017-05-11
http://www.iteye.com/problems/101522http://www.iteye.com/problems/101522
2017-05-10