把动态SQL结果集转化为视图查询的方法（运行环境：SQL2005以上版本）

原文：http://blog.csdn.net/htl258/article/details/5659935

----------------------------------------------------------------------------------
-- Author : htl258(Tony)
-- Date   : 2010-06-10 01:49:18
-- Version: Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (Intel X86)
--          Jul  9 2008 14:43:34
--          Copyright (c) 1988-2008 Microsoft Corporation
--          Developer Edition on Windows NT 5.1 <X86> (Build 2600: Service Pack 2)

-- Subject:把动态SQL结果集转化为视图查询的方法（运行环境：SQL2005以上版本）
-- Blog   : http://blog.csdn.net/htl258
----------------------------------------------------------------------------------
--> 生成测试数据表: [tb]
IF OBJECT_ID('[tb]') IS NOT NULL
    DROP TABLE [tb]
GO
CREATE TABLE [tb] ([Range] [int],[Level] [int],[Persons] [nvarchar](10))
INSERT INTO [tb]
SELECT '1','1','a' UNION ALL
SELECT '2','1','b' UNION ALL
SELECT '1','2','c' UNION ALL
SELECT '2','3','d' UNION ALL
SELECT '1','4','e' UNION ALL
SELECT '3','5','f'

--SELECT * FROM [tb]

-->SQL查询如下:
IF OBJECT_ID('p_test') IS NOT NULL
    DROP PROC p_test
GO
CREATE PROC p_test
AS
SET NOCOUNT ON
DECLARE @s VARCHAR(MAX),@s1 VARCHAR(MAX)
SELECT @s=ISNULL(@s+',','')+QUOTENAME([Level]),
    @s1=ISNULL(@s1+',','')+'ISNULL('+QUOTENAME([Level])+','''') Level'+LTRIM([Level])
FROM tb
GROUP BY [Level]
EXEC('
    SELECT [Range],'+@s1+'
    FROM tb
        PIVOT(MAX(Persons) FOR [Level] IN('+@s+'))b
')
SET NOCOUNT OFF
GO

--创建视图：
IF OBJECT_ID('v_test') IS NOT NULL
    DROP VIEW v_test
GO
CREATE VIEW v_test
AS
SELECT *
FROM OPENROWSET(
         'sqloledb',
         'Trusted_Connection=yes', --此处可用'uid=sa;pwd=123' （SQL认证的方式来代替）
         'SET FMTONLY OFF;  --注意：要加上此选项
          EXEC mydb..p_test --这里的mydb要改为实际的数据库名,p_test为创建好的存储过程名
         '
     )
GO

--查询：

SELECT * FROM v_test;
/*
Range       Level1     Level2     Level3     Level4     Level5
----------- ---------- ---------- ---------- ---------- ----------
1           a          c                     e         
2           b                     d                    
3                                                       f

(3 行受影响)
*/