如何在sql中设置自定义订单依据

我有以下疑问：

select distinct CustomerID, SortOrder, Seq
from #result
Order By CASE 
    WHEN Substring(SortOrder, 0, 1) = '~' THEN 9999999 
    else SortOrder 
    END

但是，我收到以下错误消息：如果指定了select DISTINCT，则ORDER BY items必须出现在select列表中

---

如何以正确的方式创建此自定义订单？

请改用

分组方式

：

select CustomerID, SortOrder, Seq
from #result
group by CustomerID, SortOrder, Seq
Order By (CASE WHEN Substring(SortOrder, 0, 1) = '~' THEN 9999999 
               else SortOrder 
          END);

---

使用

分组依据

：

select CustomerID, SortOrder, Seq
from #result
group by CustomerID, SortOrder, Seq
Order By (CASE WHEN Substring(SortOrder, 0, 1) = '~' THEN 9999999 
               else SortOrder 
          END);

---

如果您不介意获得额外的列，那么只需在结果集中包含您的case语句：

SELECT DISTINCT  
    CustomerID,  
    SortOrder,  
    CASE  
    WHEN Substring(SortOrder, 0, 1) = '~' THEN 9999999  
    ELSE SortOrder  
    END 
FROM 
    #result 
ORDER BY  
    CASE  
    WHEN Substring(SortOrder, 0, 1) = '~' THEN 9999999  
    ELSE SortOrder  
    END 

---

如果您不介意获得额外的列，那么只需在结果集中包含您的case语句：

SELECT DISTINCT  
    CustomerID,  
    SortOrder,  
    CASE  
    WHEN Substring(SortOrder, 0, 1) = '~' THEN 9999999  
    ELSE SortOrder  
    END 
FROM 
    #result 
ORDER BY  
    CASE  
    WHEN Substring(SortOrder, 0, 1) = '~' THEN 9999999  
    ELSE SortOrder  
    END