sqlserver数据库最大Id冲突问题解决方法之一

create table [dbo].[tbguidtable](
[tablename] [varchar](50) not null,
[keyname] [varchar](20) not null,
[keyvalue] [varchar](100) not null
) on [primary]

go

if exists (select * from dbo.sysobjects where id = object_id(n'pcreateguid') and objectproperty(id, n'isprocedure') = 1)
drop procedure pcreateguid
go
------------------------------------
--用途：增加一条记录 个人信息
--项目名称：
--说明：
--时间：2011-7-4 15:34:12,2011-08-15
------------------------------------
create procedure pcreateguid
@tablename varchar(50),
@keyname varchar(100),
@guid varchar(100) out
as
if not exists(select * from tbguidtable where tablename=@tablename and keyname=@keyname)
insert into tbguidtable (tablename,keyname,keyvalue) values(@tablename,@keyname,10000)
update tbguidtable set keyvalue=keyvalue+1 where tablename=@tablename and keyname=@keyname
select @guid=cast(keyvalue as varchar) from tbguidtable where tablename=@tablename and keyname=@keyname
go

---*****---
declare @tablename varchar(50)
declare @keyname varchar(100)
declare @guid varchar(100)
set @tablename='tb1'
set @keyname='def'
execute pcreateguid @tablename,@keyname,@guid out
print @guid