SQL Server编写存储过程小工具

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。

以下是两个存储过程的源程序


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




语法: sp_GenInsert <Table Name>,<Stored Procedure Name>


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




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

功能：为给定表创建Update存储过程


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


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




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＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝*/