SQL Server编写存储过程小工具(三)

源代码网整理以下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 <Table Name>,<Primary Key>,<Stored Procedure Name>
以northwind 数据库为例
sp_GenUpdate "Employees","EmployeeID","UPD_Employees"

源代码网整理以下注释：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。

源代码网整理以下===========================================================*/
CREATE procedure sp_GenUpdate
@TableName varchar(130),
@PrimaryKey varchar(130),
@ProcedureName varchar(130)
as
set nocount on

源代码网整理以下declare @maxcol int,
@TableID int

源代码网整理以下set @TableID = object_id(@TableName)

源代码网整理以下select @MaxCol = max(colorder)
from syscolumns
where id = @TableID

源代码网整理以下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

源代码网整理以下
select type from #tempproc order by colorder

源代码网整理以下drop table #tempproc
/*＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝源程序结束＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝*/