SQL SERVER编写存储过程小工具

    技术2022-05-12  0

     

    SQL SERVER编写存储过程小工具

    【 来源:网络  更新时间:2006-2-14 | 字体: 大 中 小】 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 --itlearner.comset @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


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