Question

我将数据从SQL加载到CSV文件。我的csv记录采用以下方式。

Eid  ename  desig  sourceD  location  
1     Ralf   PM      1        UK  
1     Ralf   PM      1        USA  
2     Marty  PL      3         GBR  
3     Levis  BA      5        UK  
4     Ricky  BI      7        RSA  
4     Ricky  BI      7        FRA

现在我想将EID 1和4组合成单行。我的输出必须采用以下方式

Eid  ename  desig  sourceD  location  
1     Ralf   PM      1        UK, USA  
2     Marty  PL      3         GBR  
3     Levis  BA      5        UK  
4     Ricky  BI      7        RSA, FRA

我只有CSV文件我没有任何SQL查询或任何东西。

Answer 1

SQL Fiddle

SQL查询

    select c1.Eid, c1.ename,c1.desig,c1.sourceD,
    (   SELECT x.location + ', '
        FROM Contacts x
        WHERE c1.Eid = x.Eid
        ORDER BY x.location
        FOR XML PATH ('')
    ) as Locations
from Contacts c1
group by c1.Eid, c1.ename,c1.desig,c1.sourceD

工作？

如果你想在最后没有逗号：

    SELECT c1.Eid, c1.ename,c1.desig,c1.sourceD,
   LEFT( (   SELECT x.location + ', '
        FROM Contacts x
        WHERE c1.Eid = x.Eid
        ORDER BY x.location
        FOR XML PATH ('')
    ),LEN((   SELECT x.location + ', '
        FROM Contacts x
        WHERE c1.Eid = x.Eid
        ORDER BY x.location
        FOR XML PATH ('')
    ))-1) AS Locations
FROM Contacts c1
GROUP BY c1.Eid, c1.ename,c1.desig,c1.sourceD

此查询将让您避免长度0：

    SELECT c1.Eid, c1.ename,c1.desig,c1.sourceD,
   LEFT( (   SELECT x.location + ', '
        FROM Contacts x
        WHERE c1.Eid = x.Eid
        ORDER BY x.location
        FOR XML PATH ('')
    ),CASE WHEN LEN((   SELECT x.location + ', '
        FROM Contacts x
        WHERE c1.Eid = x.Eid
        ORDER BY x.location
        FOR XML PATH ('')
    ))=0 THEN 1 ELSE LEN((   SELECT x.location + ', '
        FROM Contacts x
        WHERE c1.Eid = x.Eid
        ORDER BY x.location
        FOR XML PATH ('')
    )) END -1) AS Locations
FROM Contacts c1
GROUP BY c1.Eid, c1.ename,c1.desig,c1.sourceD

在SSIS中的CSV文件中将多行组合成单行

1 个答案: