加入具有相同的代碼

Question

我的SQL Server 2014快速這種選擇一些值：

SELECT DISTINCT Name, Lastname, Phone1, Phone2, Phone3, ... PhoneN 
FROM TableX 
WHERE Phone1 <> '' 

而現在的結果是這樣的：

Name Lastname Phone1  Phone2  Phone3  ... 
James Brown  68798768 
James Brown  98761456 
Alice Grey  66687974 
Peter Thompson 87997555 
Peter Thompson 87997444 
Peter Thompson 87997333 

我需要一個選擇返回我他們用同樣的名字打電話給這樣的人：

Name Lastname Phone1  Phone2  Phone3  ... 
James Brown  68798768 98761456 
Alice Grey  66687974 
Peter Thompson 87997555 87997444 87997333 

任何查詢？

謝謝！

Answer 1

如果你有手機的最大數目，你不需要去動態的，有條件的聚集可能做的伎倆

Select Name 
     ,LastName 
     ,Phone1 = max(case when RN=1 then Phone1 else '' end) 
     ,Phone2 = max(case when RN=2 then Phone1 else '' end) 
     ,Phone3 = max(case when RN=3 then Phone1 else '' end) 
     ,Phone4 = max(case when RN=4 then Phone1 else '' end) 
From (
     Select * 
       ,RN = Row_Number() over (Partition By Name,LastName Order By Phone1) 
     From YourTable 
     ) A 
Group By Name,LastName 

Answer 2

考慮你只有最多10個電話號碼，你可以做一些事情像......

Select * 
FROM (
     Select * 
      ,'Phone-' + CAST(ROW_NUMBER() OVER (PARTITION BY Name, LastName 
         ORDER BY Phone1) AS VARCHAR(10)) PhoneNum 
     FROM TableName 
    ) t 
PIVOT (MAX(Phone1) 
     FOR PhoneNum 
     IN ([Phone-1],[Phone-2],[Phone-3],[Phone-4],[Phone-5], 
      [Phone-6],[Phone-7],[Phone-8],[Phone-9],[Phone-10]) 
     )p