Question

我有一个TRANSACTION表。列是=

Personnel_id和Personnel_Name

我想找到最重复的数据排序。我怎么能这样做？我试过，我发现，最重复的结果，但我不能显示personnel_name。

这是我的查询;

SELECT PERSONNEL_ID,
       COUNT(PERSONNEL_ID) 
FROM KOMTAS.TRANSACTIONS 
GROUP BY PERSONNEL_ID;

此代码出错;

    SELECT MAX(R),
           PERSONNEL_ID 
    FROM ( SELECT PERSONNEL_ID,
                  COUNT(PERSONNEL_ID) R 
           FROM KOMTAS.TRANSACTIONS 
           GROUP BY PERSONNEL_ID 
)  ;

请帮忙！

Answer 1

在第二个查询中添加第二个组：

SELECT MAX(R),
           PERSONNEL_ID 
    FROM ( SELECT PERSONNEL_ID,
                  COUNT(PERSONNEL_ID) R 
           FROM KOMTAS.TRANSACTIONS 
           GROUP BY PERSONNEL_ID ) 
GROUP BY  PERSONNEL_ID;

Answer 2

我建议使用rownum和子查询：

SELECT t.*
FROM (SELECT PERSONNEL_ID, COUNT(PERSONNEL_ID) as cnt
      FROM KOMTAS.TRANSACTIONS
      GROUP BY PERSONNEL_ID
      ORDER BY COUNT(PERSONNEL_ID) DESC
     ) t
WHERE rownum = 1;

Answer 3

试试这个

SELECT MAX(cnt) AS c, PersonId FROM ( SELECT PersonId, COUNT(PersonId) cnt FROM TRANSACTIONS GROUP BY PersonId ) GROUP BY PersonId ORDER BY c DESC;

点击此处SQLFiddle

如何在oracle中找到最重复的数据？

3 个答案: