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问题描述
我有一个包含以下字段和示例数据的 SQL Server 表:
I have a SQL Server table with the following fields and sample data:
ID employeename
1 Jane
2 Peter
3 David
4 Jane
5 Peter
6 Jane
ID
列的每一行都有唯一值.
The ID
column has unique values for each row.
employeename
列有重复项.
我希望能够根据 employeename
列找到重复项,并在它们旁边列出重复项的 ID
,用逗号分隔.
I want to be able to find duplicates based on the employeename
column and list the ID
s of the duplicates next to them separated by commas.
上述示例数据的预期输出:
Output expected for above sample data:
employeename IDs
Jane 1,4,6
Peter 2,5
我不想在此查询中考虑表中的其他列.
There are other columns in the table that I do no want to consider for this query.
感谢您的帮助!
推荐答案
select
employeename,
IDs = STUFF((SELECT ','+ CAST(e2.[ID] AS VARCHAR(10))
FROM emp e2
WHERE e2.employeename = e1.employeename
For XML PATH('')
),1,1,'')
FROM emp e1
GROUP BY employeename having COUNT(*) > 1
SQL Fiddler
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