Question

我在SQL Server 2005中运行的查询中遇到数据重复问题：

`SELECT i.datecreated, i.CompanyName, i.City, i.State, i.Phone, i.InsCoID, i.Address1, i.Zip,
case i.Reviewed when 0 then 'Pending Approval' else 'Active' end,
r.FirstName + ' ' + r.LastName AS Adjuster, r.Phone
FROM V_InsRepresentative r
RIGHT JOIN V_InsCompany i ON r.InsCoID = i.InsCoID
WHERE i.DateCreated >= '5/18/2014'
And i.DateCreated < '5/26/2014'
AND i.Status = '1'
ORDER BY     i.state, i.companyname`

其中一条记录重复，因为有两个调整器。有没有办法只有一个调整器显示？

Answer 1

尝试使用调整器上的Max（）对数据进行分组，以便只显示一个调整器：

SELECT  i.datecreated ,
        i.CompanyName ,
        i.City ,
        i.State ,
        i.Phone ,
        i.InsCoID ,
        i.Address1 ,
        i.Zip ,
        CASE i.Reviewed
          WHEN 0 THEN 'Pending Approval'
          ELSE 'Active'
        END ,
        Max(r.FirstName + ' ' + r.LastName) AS Adjuster ,
        r.Phone
FROM    V_InsRepresentative r
        RIGHT JOIN V_InsCompany i ON r.InsCoID = i.InsCoID
WHERE   i.DateCreated >= '5/18/2014'
        AND i.DateCreated < '5/26/2014'
        AND i.Status = '1'
group by 
i.datecreated ,
        i.CompanyName ,
        i.City ,
        i.State ,
        i.Phone ,
        i.InsCoID ,
        i.Address1 ,
        i.Zip ,
        CASE i.Reviewed
          WHEN 0 THEN 'Pending Approval'
          ELSE 'Active'
        END ,
        r.Phone
ORDER BY i.state ,
        i.companyname

Answer 2

我建议在from条款中修复此问题：

FROM    (SELECT r.*, row_number() over (partition by InsCoID order by INsCoId) as seqnum
         FROM V_InsRepresentative r
        ) r
        RIGHT JOIN V_InsCompany i ON r.InsCoID = i.InsCoID and r.seqnum = 1

这将任意选择r表中的一行，我相信这是重复检查员的意思。

从连接表中选择或底部记录

2 个答案: