Question

这可能很简单 - 但我是SQL新手，不知道要使用哪些函数。

我有一个包含以下数据的表：

Costcode        CostDescr
_________________________________
4000            Product 
4001            Other 
4100            Product 
4101            Other 
5000            Product 
5001            Other 
5100            Product 
5101            Other

我试图让输出看起来像这样：

X Sales         Y Sales          CostDescr       X Purchases       Y Purchases
_______________________________________________________________________________
 4000             4100          Product              5000             5100
 4001             4101          Other                5001             5101

如何从结果中创建此格式？

Answer 1

使用此查询：

SELECT CASE 
         WHEN Costcode >= 4000 AND Costcode < 4100 THEN 'X Sales'
         WHEN Costcode >= 4100 AND Costcode < 5000 THEN 'Y Sales'
         WHEN Costcode >= 5000 AND Costcode < 5100 THEN 'X Purchases'
         WHEN Costcode >= 5100 THEN 'Y Purchases'
       END As PivotColumn,
       SUBSTRING(CostDescr, 1, CHARINDEX(' ', CostDescr, 1) - 1) AS CostType,
       Costcode
FROM #Sales

你得到一个表值表达式，可以执行哪个数据透视表。这是使用您提供的示例数据的上述语句的输出：

PivotColumn CostType    Costcode
---------------------------------
X Sales     Product     4000
X Sales     Other       4001
Y Sales     Product     4100
Y Sales     Other       4101
X Purchases Product     5000
X Purchases Other       5001
Y Purchases Product     5100
Y Purchases Other       5101

因此，以下查询提供了所需的输出：

SELECT CostType, [X Sales] AS [X Sales], [Y Sales] AS [Y Sales], 
                 [X Purchases] AS [X Purchases], [Y Purchases] AS [Y Purchases]
FROM 
(SELECT CASE 
        WHEN Costcode >= 4000 AND Costcode < 4100 THEN 'X Sales'
        WHEN Costcode >= 4100 AND Costcode < 5000 THEN 'Y Sales'
        WHEN Costcode >= 5000 AND Costcode < 5100 THEN 'X Purchases'
        WHEN Costcode >= 5100 THEN 'Y Purchases'
       END As PivotColumn,
       SUBSTRING(CostDescr, 1, CHARINDEX(' ', CostDescr, 1) - 1) AS CostType,
       Costcode       
FROM #Sales) s
PIVOT
(
AVG (Costcode)
FOR PivotColumn IN ( [X Sales], [Y Sales], [X Purchases], [Y Purchases] )
) AS pvt

输出：

    CostType    X Sales Y Sales X Purchases Y Purchases
   ------------------------------------------------------
    Other       4001    4101    5001        5101
    Product     4000    4100    5000        5100

在SQL中格式化表结果

1 个答案: