mysql查找與匹配值不匹配的匹配鍵

Question

我正在處理有一些重複數據的數據庫，並試圖編寫一個查詢來解決問題數據。該表看起來像：

lpID, pID, pName, etc... 

其中lpID是此表的唯一ID，pID是整個數據庫的共享ID。我有這樣的拉匹配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，但現在我想擴展它，使得它僅會被那些不匹配PNAME值938。沒有任何我嘗試似乎工作。我怎樣才能做到這一點？

Answer 1

你試過

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