Question

我有一个关于以表格形式获取数据的问题。我有一个单行的表现在我只想在给定逻辑的基础上增加数量.. 喜欢

1st row amount=1200, 
2nd row amount=1320(1200+120),
3rd row amount=1452(1320+132)

逻辑是10％加上以前的金额

我的桌子是

Sno - Name- Amount
1  - A  -  1200

现在我想要这样的结果..

Sno - Name- Amount

1  - A  -  1200
2  - A  -  1320
3  - A  -  1452

任何人都可以帮助我，我找不到任何逻辑

Answer 1

这与WadimX的答案完全相同，但它会做100行。要根据输入表（我将其称为example）生成示例输出：

;WITH nums AS
   (SELECT 1 AS RowNum, Name, Amount
    FROM (SELECT Name, Amount FROM example) s
    UNION ALL
    SELECT RowNum + 1 As RowNum, Name, CAST(1.1*Amount AS INT) AS Amount
    FROM nums
    WHERE RowNum < 5) 
SELECT RowNum AS SNo, Name, Amount
FROM nums 
ORDER BY Name

SQLFiddle

为example中的每条记录返回5行，您可以通过将RowNum < 5更改为100或者您想要的更多来增加该计数。

<强>输出

SNo    Name     Amount
-----------------------
1      A        1200
2      A        1320
3      A        1452
...    ...      ...

Answer 2

WITH COUNTER(RN) 
    AS 
    (
        SELECT ROW_NUMBER() OVER(ORDER BY object_id) 
        FROM sys.objects
    ),
    A(RN, value) 
    AS 
    (
        SELECT CAST(1 as bigint),
               CAST(1200 as decimal(20, 0))
        UNION ALL 
        SELECT COUNTER.RN,
               CAST(A.value*1.1 as decimal(20, 0)) 
        FROM COUNTER JOIN A ON A.RN=COUNTER.RN-1
    )
SELECT TOP 1000 * 
FROM A
OPTION(MAXRECURSION 1000)

此示例从sys.objects中选择前1000行。您应该将 sys.objects 替换为您的表名，将 object_id 替换为主/唯一键列。您还应该更改 TOP 1000 和 MAXRECURSION 1000 。注意MAXRECURSION可能介于0和32767之间，0 - 无限制。注意大表，因为它会导致算术溢出值。

Answer 3

这就是你要求的：

select sno, name, amount from table1
union select sno+1, name, amount*1.1 from table1
union select sno+2, name, amount*1.1*1.1 from table1

但它不是很灵活。例如。如果有多行，您可能会获得重复的'sno'数字。

Answer 4

重新修改使用cte的答案：

DECLARE @T TABLE (sno INT, name CHAR(1), amount INT)
INSERT INTO @T
SELECT 1, 'a', 1200

;WITH cte AS (
    SELECT  sno, name, amount
    FROM    @T
    WHERE sno = 1
    UNION ALL
    SELECT sno+1, name, amount + amount / 10
    FROM cte
    WHERE sno+1 <= 100
)
SELECT  *
FROM    cte

结果：

sno name    amount
1   a   1200
2   a   1320
3   a   1452
4   a   1597
5   a   1756
6   a   1931

增加了sql中每一行的数量

4 个答案: