sql server 2005中的遞歸函數？

Question

任何人都可以建議說明遞歸函數的編程示例嗎？ 例如斐波那契數列或階乘..

Answer 1

這裏是我發現使用google.com幾篇文章;）

Recursion in T–SQL
Using recursion in stored procedures
A Recursive User-Defined Function (SQL Server 2000)

Answer 2

搜索「公用表表達式」。另請參見this link

更新添加例如從上面提到的鏈接：

;WITH Fibonacci(n, f, f1) 
AS (
     -- This is the anchor part 
     -- Initialize level to 1 and set the first two values as per definition 
     SELECT CAST(1 AS BIGINT), 
       CAST(0 AS BIGINT), 
       CAST(1 AS BIGINT) 

     UNION ALL 

     -- This is the recursive part 
     -- Calculate the next Fibonacci value using the previous two values 
     -- Shift column (place) for the sum in order to accomodate the previous 
     -- value too because next iteration need them both 
     SELECT n + 1, 
       f + f1, 
       f 
     FROM Fibonacci 
     -- Stop at iteration 93 because we than have reached maximum limit 
     -- for BIGINT in Microsoft SQL Server 
     WHERE n < 93 
) 
-- Now the easy presentation part 
SELECT n, 
     f AS Number 
FROM Fibonacci 

Answer 3

對於CTE q uery遞歸請參閱此鏈接。 http://www.4guysfromrolla.com/webtech/071906-1.shtml

對於TSQL過程/功能遞歸看到此鏈接http://msdn.microsoft.com/en-us/library/aa175801%28SQL.80%29.aspx