最大值唯一

Question

有如下表格。如果最大confidenceCode值是唯一的，则返回该行，否则为否。

 LocationID ConfidenceCode
 017755029   05
 017755029   05
 017755029   01
 018577655   05
 018577655   09
 021886301   10
 021886301   09
 021886301   09           

预期产出

  LocationID ConfidenceCode
  018577655   09
  021886301   10

我的SQL如下，它正在工作，寻找更好的版本

 ;WITH CTEConfidenceCode as
 (
 SELECT *, dense_rank() over (partition by  LocationID order by 
 [ConfidenceCode] desc)  as ConfidenceRowNum FROM testTable
 ),
 CTEGroup as 
 (SELECT DUNS1,[ConfidenceCode],count(1) countValue  FROM CTEConfidenceCode
 WHERE ConfidenceRowNum=1
 GROUP BY LocationID,[ConfidenceCode])

 SELECT * FROM CTEGroup WHERE countValue=1

Answer 1

嗯。嗯。 。 。如果我理解你的问题：

[HttpPost]
[Route("Send")]
public HttpResponseMessage Send(MessageDetails details)
{

}

public class MessageDetails
{
    public string usernameTo { get; set; }
    public string message { get; set; }
}