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SQL SERVER编写存储过程小工具

2017-11-23 10:07 | 发布者: moke | 栏目:ASP编程

在开发数据库系统的过程中,经常要写很多的存储过程。为了统一格式和简化开发过程,我编写一些存储过程,用来自动生成存储过程。下面就为您简单介绍一下它们。其中一个用于生成Insert过程,另一个用于生成Update过程。


Sp_GenInsert

该过程运行后,它为给定的表生成一个完整的Insert过程。如果原来的表有标识列,您得将生成的过程中的SET IDNTITY_INSERT ON 语句手工删除。

语法如下

sp_GenInsert < Table Name >,< Stored Procedure Name >

以northwind 数据库为例

sp_GenInsert 'Employees', 'INS_Employees'

最后会生成一个Insert存储过程。利用它,您可以作进一步的开发。


Sp_GenUpdate

它会为一个表生成update存储过程。语法如下:

sp_GenUpdate < Table Name >,< Primary Key >,< Stored Procedure Name >

以northwind 数据库为例

sp_GenUpdate 'Employees','EmployeeID','UPD_Employees'

运行后生成如下所示的存储过程:

Create Procedure UPD_Employees

@EmployeeID int

@LastName nvarchar(40) ,

@FirstName nvarchar(20) ,

@Title nvarchar(60) ,

@TitleofCourtesy nvarchar(50) ,

@BirthDate datetime ,

@HireDate datetime ,

@Address nvarchar(120) ,

@City nvarchar(30) ,

@Region nvarchar(30) ,

@PostalCode nvarchar(20) ,

@Country nvarchar(30) ,

@HomePhone nvarchar(48) ,

@Extension nvarchar(8) ,

@Phote image ,

@Notes ntext ,

@ReportsTo int ,

@PhotoPath nvarchar(510)

AS

UPDATE Employees

SET

LastName = @LastName,

FirstName = @FirstName,

Title = @Title,

TitleofCourtesy = @TitleofCourtesy,

BirthDate = @BirthDate,

HireDate = @HireDate,

Address = @Address,

City = @City,

Regin = @Regin,

PostalCode = @PostCode,

Country = @Country,

HomePhone = @HomePhone,

Extension = @Extension,

Photo = @Photo

Notes = @Notes,

ReportsTo = @ReportsTo,

PhotoPath = @PhotoPath

WHERE EmployeeID = @EmployeeID


使用以上的两个存储过程,节省了我不少时间。特别是在改变了表结构后,重新构造各个存储过程的过程中。您可以改写这两个程序,来自动生成别的存储过程。

SQL Server编写存储过程小工具
以下是两个存储过程的源程序
/*===========================================================

语法: sp_GenInsert

,
以northwind 数据库为例
sp_GenInsert 'Employees', 'INS_Employees'

注释:如果您在Master系统数据库中创建该过程,那您就可以在您服务器上所有的数据库中使用该过程。

=============================================================*/

CREATE procedure sp_GenInsert
@TableName varchar(130),
@ProcedureName varchar(130)
as
set nocount on

declare @maxcol int,
@TableID int
--itlearner.com
set @TableID = object_id(@TableName)

select @MaxCol = max(colorder)
from syscolumns
where id = @TableID

select 'Create Procedure ' + rtrim(@ProcedureName) as type,0 as colorder into #TempProc
union
select convert(char(35),'@' + syscolumns.name)
+ rtrim(systypes.name)
+ case when rtrim(systypes.name) in ('binary','char','nchar','nvarchar','varbinary','varchar') then '(' + rtrim(convert(char(4),syscolumns.length)) + ')'
when rtrim(systypes.name) not in ('binary','char','nchar','nvarchar','varbinary','varchar') then ' '
end
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select 'AS',@maxcol + 1 as colorder
union
select 'INSERT INTO ' + @TableName,@maxcol + 2 as colorder
union
select '(',@maxcol + 3 as colorder
union
select syscolumns.name
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder + @maxcol + 3 as colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select ')',(2 * @maxcol) + 4 as colorder
union
select 'VALUES',(2 * @maxcol) + 5 as colorder
union
select '(',(2 * @maxcol) + 6 as colorder
union
select '@' + syscolumns.name
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder + (2 * @maxcol + 6) as colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select ')',(3 * @maxcol) + 7 as colorder
order by colorder


select type from #tempproc order by colorder

drop table #tempproc

SQL Server编写存储过程小工具
功能:为给定表创建Update存储过程
语法: sp_GenUpdate

,,
以northwind 数据库为例
sp_GenUpdate 'Employees','EmployeeID','UPD_Employees'

注释:如果您在Master系统数据库中创建该过程,那您就可以在您服务器上所有的数据库中使用该过程。

===========================================================*/
CREATE procedure sp_GenUpdate
@TableName varchar(130),
@PrimaryKey varchar(130),
@ProcedureName varchar(130)
as
set nocount on

declare @maxcol int,
@TableID int
--itlearner.com
set @TableID = object_id(@TableName)

select @MaxCol = max(colorder)
from syscolumns
where id = @TableID

select 'Create Procedure ' + rtrim(@ProcedureName) as type,0 as colorder into #TempProc
union
select convert(char(35),'@' + syscolumns.name)
+ rtrim(systypes.name)
+ case when rtrim(systypes.name) in ('binary','char','nchar','nvarchar','varbinary','varchar') then '(' + rtrim(convert(char(4),syscolumns.length)) + ')'
when rtrim(systypes.name) not in ('binary','char','nchar','nvarchar','varbinary','varchar') then ' '
end
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select 'AS',@maxcol + 1 as colorder
union
select 'UPDATE ' + @TableName,@maxcol + 2 as colorder
union
select 'SET',@maxcol + 3 as colorder
union
select syscolumns.name + ' = @' + syscolumns.name
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder + @maxcol + 3 as colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and syscolumns.name <> @PrimaryKey and systypes.name <> 'sysname'
union
select 'WHERE ' + @PrimaryKey + ' = @' + @PrimaryKey,(2 * @maxcol) + 4 as colorder
order by colorder


select type from #tempproc order by colorder

drop table #tempproc
/*=======源程序结束=========*/

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