SQL 视图结构

2011-10-27 05:51:09 120 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

FPGA驱动OV5640：从SCCB协议到图像数据采集的实战解析本文详细解析了使用FPGA驱动OV5640摄像头模组的完整流程，从SCCB协议通信、寄存器配置到图像数据采集。重点阐述了SCCB（与I2C类似）协议的实现细节、关键的上电复位时序，以及如何通过状态机解析视频流时序并捕获图像数据，为嵌入式视觉开发提供了实战指南。阅读详情

有没有办法通过SQL语句查询到视图是如何生成的？
谢谢！

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-晴天 2011-10-27

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只能通过视图创建语句去分析,系统表中只记录两个东西,一是在sysobjects表中记录视图的一些属性,另一个是在syscolumns表中记录视图所查的列的属性.

--小F-- 2011-10-27

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--批量查询

USE MASTER

GO

CREATE proc sp_MSforeachObject

 @objectType int=1,

 @command1 nvarchar(2000), 

 @replacechar nchar(1) = N'?', 

 @command2 nvarchar(2000) = null,

    @command3 nvarchar(2000) = null, 

 @whereand nvarchar(2000) = null,

 @precommand nvarchar(2000) = null, 

 @postcommand nvarchar(2000) = null

as

 /* This proc returns one or more rows for each table (optionally, matching @where), with each table defaulting to its 

own result set */

 /* @precommand and @postcommand may be used to force a single result set via a temp table. */

 /* Preprocessor won't replace within quotes so have to use str(). */

 declare @mscat nvarchar(12)

 select @mscat = ltrim(str(convert(int, 0x0002)))

 if (@precommand is not null)

  exec(@precommand)

 /* Defined  @isobject for save object type */

 Declare @isobject varchar(256)

 select @isobject= case @objectType when 1 then 'IsUserTable'

         when 2 then 'IsView'

         when 3 then 'IsTrigger'

         when 4 then 'IsProcedure' 

         when 5 then 'IsDefault'   

         when 6 then 'IsForeignKey'

         when 7 then 'IsScalarFunction'

         when 8 then 'IsInlineFunction'

         when 9 then 'IsPrimaryKey'

         when 10 then 'IsExtendedProc'    

         when 11 then 'IsReplProc'

         when 12 then 'IsRule'

                  end

 /* Create the select */

 /* Use @isobject variable isstead of IsUserTable string */

EXEC(N'declare hCForEach cursor global for select ''['' + REPLACE(user_name(uid), N'']'', N'']]'') + '']'' + ''.'' + ''['' + 

REPLACE(object_name(id), N'']'', N'']]'') + '']'' from dbo.sysobjects o '

        + N' where OBJECTPROPERTY(o.id, N'''+@isobject+''') = 1 '+N' and o.category & ' + @mscat + N' = 0 '

       + @whereand)

 declare @retval int

 select @retval = @@error

 if (@retval = 0)

  exec @retval = sp_MSforeach_worker @command1, @replacechar, @command2, @command3

 if (@retval = 0 and @postcommand is not null)

  exec(@postcommand)

 return @retval

GO



这样我们来测试一下:

   --获得所有的存储过程的脚本:

         EXEc sp_MSforeachObject @command1="sp_helptext '?' ",@objectType=4

   --获得所有的视图的脚本:

         EXEc sp_MSforeachObject @command1="sp_helptext '?' ",@objectType=2

中国风 2011-10-27

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[每日小知識]_解决SQL Server里sp_helptext输出格式错行问题
http://topic.csdn.net/u/20080804/12/f477b3d8-0017-4ef9-b516-021032be83ce.html

中国风 2011-10-27

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也可用



CREATE VIEW v

AS

SELECT 1 AS ID

go

SELECT text FROM syscomments WHERE ID=OBJECT_ID('v')

唐诗三百首 2011-10-27

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还有object_definition函数.



create view v1

as

select top 10 * from sysobjects

go



select object_definition(object_id('v1')) code



code

---------------------------------

create view v1

as

select top 10 * from sysobjects

AcHerat 2011-10-27

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create view v1

as

select top 10 *

from hy_fz_productTicketInfo

go



exec sp_helptext v1



drop view v1



/************



Text

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

create view v1

as

select top 10 *

from hy_fz_productTicketInfo

AcHerat 2011-10-27

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sp_helptext

gw6328 2011-10-27

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sp_helptext

SQL 视图结构

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