Question

我有一张如下表：

Col_Name   Col_Id  Col_Flag
  A          1        1
  A          1        2
  B          1        1
  C          2        1
  C          2        2

对于这些记录，我希望得到Col_Id由不同网Col_Name共享的结果，对于上面的示例，所需的结果是将Col_Id作为{返回{1}}，因为它是1和A分享的，我不希望B返回，因为只有Col_Id = 2正在使用此值。

并且，使用相同C的相同Col_Name的总数不限于Col_Id，这意味着2可能大于2。 / p>

任何建议都将不胜感激。感谢。

Answer 1

 SELECT COL_ID,count(distinct COL_NAME) FROM TABLE
 GROUP BY COL_ID 
 having count(distinct COL_NAME)>1

Answer 2

试试这个

 SELECT COL_ID FROM test9
 GROUP BY COL_ID
 having COUNT(DISTINCT COL_Name)>1

Answer 3

在col_id和WHERE子句上使用自联接将输出限制为具有不同col_name的那些情况：

select distinct
    a.col_id
from
    some_table as a
    inner join some_table as b on a.col_id=b.col_id
where
    a.col_name <> b.col_name;

Answer 4

;WITH CTE(COL_NAME,COL_ID,COL_FLAG)
AS
(
SELECT 'A', 1,1 UNION ALL
SELECT 'A', 1,2 UNION ALL
SELECT 'B', 1,1 UNION ALL
SELECT 'C', 2,1 UNION ALL
SELECT 'C', 2,2
)
SELECT COL_ID,
       COL_NAME FROM
(
SELECT COL_ID,COL_NAME,
COUNT(COL_NAME)OVER(PARTITION BY COL_ID,COL_NAME ORDER BY COL_NAME) AS UNIQENAME
FROM CTE
)DT
WHERE DT.UNIQENAME=1

如何选择共享相同ID但名称不同的记录？

4 个答案: