如何订购2个SQL字段在asc和desc动态

Question

我想订购一个SQL Select查询哪里有2个字段按顺序排列。然后我需要决定一个是降序而另一个是升序。如何做到这一点

我想是这样的：

Select * from Customer 
Order By Date @asc_or_Desc_date, Name @asc_or_Desc_name 

任何人有什么想法？

我都试过，但它似乎无法

SELECT 

    Customer_ID,       
    Name,        
    Age           

FROM #Customer 
ORDER BY 

    CASE WHEN @fieldSort ='Name' 
     THEN ROW_NUMBER() over (order by Name) * 
      case when @directionOfSort = 'A' 
       THEN 1 ELSE -1 END, 
      ROW_NUMBER() over (order by Age) * 
      case when @directionOfSort = 'A' 
       THEN 1 ELSE -1 END, 
     END 

任何人都知道如何排序呢？

Answer 1

你将不得不为了使用一个变量动态创建SQL语句：

DECLARE @asc_desc VARCHAR(4); 

SET @asc_desc = 'DESC'; 

DECLARE @sql NVARCHAR(1000); 

SET @sql = 'Select * from Customer Order By Date ' + @asc_desc + ', Name'; 

EXEC sp_executesql @sql 

这将订单日期DESCENDING和名称ASCENDING。

如果您想使用DESCENDING，您只需要添加DESC，因为ASCENDING是默认值。

Answer 2

在SQL Server 2005 +，你可以采用以下设备：

WITH CustomerCTE AS (
    SELECT 
    *, 
    DateSort = ROW_NUMBER() OVER (ORDER BY Date), 
    NameSort = ROW_NUMBER() OVER (ORDER BY Name) 
    FROM Customer 
) 
SELECT * 
FROM CustomerCTE 
ORDER BY DateSort * @DateSortDir, NameSort * @NameSortDir 

在这种情况下，增值经销商应该是1或-1。

---

编辑

的额外贴例子似乎暗示列的顺序，以便使用的应该是动力了。现在看来，这两个列的顺序方向是一致的。

无论是否如此（问题变得更加模糊），两者都在我的第二个解决方案中被假定。

DECLARE @IntSortDir int; 
SET @IntSortDir = CASE @directionOfSort WHEN 'A' THEN 1 ELSE -1 END; 

WITH CustomerCTE AS (
    SELECT 
    Customer_ID, 
    Name, 
    Age, 
    NameSort = ROW_NUMBER() OVER (ORDER BY Name), 
    AgeSort = ROW_NUMBER() OVER (ORDER BY Date) 
    FROM Customer 
) 
SELECT 
    Customer_ID, 
    Name, 
    Age 
FROM CustomerCTE 
ORDER BY 
    CASE @fieldSort WHEN 'Age' THEN AgeSort END * @IntSortDir, 
    NameSort * @directionOfSort, 
    CASE @fieldSort WHEN 'Name' THEN AgeSort END * @IntSortDir 

@fieldSort指定主要订单栏。另一个自动成为第二个。

Answer 3

SELECT 
    Customer_ID,       
    Name,        
    Age           
FROM 
    #Customer 
ORDER BY 
    CASE WHEN @field = 'Name' AND @direction = 'A' THEN Name ELSE NULL END ASC, 
    CASE WHEN @field = 'Name' AND @direction = 'D' THEN Name ELSE NULL END DESC, 
    CASE WHEN @field = 'Age' AND @direction = 'A' THEN Age ELSE NULL END ASC, 
    CASE WHEN @field = 'Age' AND @direction = 'D' THEN Age ELSE NULL END DESC 

我不想这样做，在许多不同的组合虽然。如果你有很多的组合我会做somethign基于以下...

SELECT 
    Customer_ID,       
    Name,        
    Age           
FROM 
(
    SELECT 
    Customer_ID, 
    Name, 
    ROW_NUMBER() OVER (ORDER BY Name) AS "name_order", 
    Age, 
    ROW_NUMBER() OVER (ORDER BY Age) AS "age_order" 
    FROM 
    #Customer 
) 
    AS [data] 
ORDER BY 
    CASE @field1 
    WHEN 'Name' THEN CASE @direction1 WHEN 'A' THEN name_order ELSE -name_order END 
    WHEN 'Age' THEN CASE @direction1 WHEN 'A' THEN age_order ELSE -age_order END 
    ELSE NULL 
    END, 
    CASE @field2 
    WHEN 'Name' THEN CASE @direction2 WHEN 'A' THEN name_order ELSE -name_order END 
    WHEN 'Age' THEN CASE @direction2 WHEN 'A' THEN age_order ELSE -age_order END 
    ELSE NULL 
    END 

重复多次要求...

注意：只需因为可以这样做，并不意味着它应该这样做。

Answer 4

Here is the solution 

Explanation: 
1. Ordering the row number on the basis of SQL input param order by (DESC, ASC) 
2. Againt ordering the row number in outer query 

Try this code (working) 

DECLARE @PageNum int 
DECLARE @PageSize int 
DECLARE @TotalRowsNum int 
DECLARE @SortColumn varchar(200) 
DECLARE @SortOrder varchar(5) 

SET @PageNum = 4; 
SET @PageSize = 10; 
SET @SortColumn = 'CODE_ID'; 
SET @SortOrder = 'DESC'; 

WITH QueryResult AS 
(

SELECT *, 
CASE @SortOrder WHEN 'ASC' THEN 
ROW_NUMBER() OVER(ORDER BY @SortColumn ASC) 
ELSE 
ROW_NUMBER() OVER(ORDER BY @SortColumn DESC) 
END AS 'RowNumber' 

FROM TABLE_NAME 
) 
SELECT * FROM QueryResult 
WHERE RowNumber BETWEEN (@PageNum - 1) * @PageSize + 1 AND @PageNum * @PageSize 
ORDER BY RowNumber ASC