选择所有重复从表

Question

我心中已经有像这样的表：

serial_id season ep_id 
1   1  1 < duplicate 
1   1  2 
3   1  1 
... 
1   1  1 < duplicate 

我要选择那些在serial_id，季节和EP＃ID重复的值都行，我应该用什么查询？ 谢谢。

Answer 1

“..在serial_id，season和ep_id中重复的值。”

SELECT serial_id, ep_id, season 
FROM tableName 
GROUP BY serial_id, ep_id, season 
HAVING COUNT(*) > 1 

• SQLFiddle Demo

，但如果你想获得的所有列（*假设你有除了serial_id，EP_ID，季节*其他列）行

SELECT a.* 
FROM tableName a 
     INNER JOIN 
     (
      SELECT serial_id, ep_id, season 
      FROM tableName 
      GROUP BY serial_id, ep_id, season 
      HAVING COUNT(*) > 1 
     ) b ON a.serial_id = b.serial_id AND 
       a.ep_id = b.ep_id AND 
       a.season = b.season 

内
• SQLFiddle Demo

Answer 2

是这样的：

select serial_id, season, ep_id, count(*) records 
from yourtable 
group by serial_id, season, ep_id 
having count(*) > 1