mysql查找与匹配值不匹配的匹配键

Question

我正在处理有一些重复数据的数据库，并试图编写一个查询来解决问题数据。该表看起来像：

lpID, pID, pName, etc... 

其中lpID是此表的唯一ID，pID是整个数据库的共享ID。我有这样的拉匹配PID值（16K）：

SELECT lp.pID, group_concat(lp.lpID) as lpIDs, group_concat(lp.pName) as names 
FROM lp 
INNER JOIN (
    SELECT pID 
    FROM lp 
    GROUP BY pID 
    HAVING count(pID) > 1 
) dup ON lp.pID = dup.pID 
group by lp.pID 

其中一期工程，但现在我想扩展它，使得它仅会被那些不匹配PNAME值938。没有任何我尝试似乎工作。我怎样才能做到这一点？

Answer 1

你试过

SELECT lp.pID, group_concat(lp.lpID) as lpIDs, group_concat(lp.pName) as names 
FROM lp 
INNER JOIN (
    SELECT pID, COUNT(distinct pName) AS Names 
    FROM lp 
    GROUP BY pID 
    HAVING count(pID) > 1 AND Names > 1 
) dup ON lp.pID = dup.pID 
group by lp.pID