MaoBisheng

Asp.Net(C#) & SQL & Oracle

  博客园 :: 首页 :: 博问 :: 闪存 :: 新随笔 :: 联系 :: 订阅 订阅 :: 管理 ::

新建存自增ID的表:

CREATE TABLE [dbo].[IdentityID](
[TableName] [varchar](500) NOT NULL,
[NextID] [bigint] NOT NULL,
CONSTRAINT [PK_IdentityID] PRIMARY KEY CLUSTERED
(
[TableName] ASC
)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
)
ON [PRIMARY]

写一个存储获取当前表的ID:

CREATE PROCEDURE [dbo].[SP_GetIdentityID]
@TableName varchar(500)
AS
BEGIN
SET NOCOUNT ON;

declare @IdentityID bigint
set @IdentityID=1

begin tran
update IdentityID
set @IdentityID=NextID,NextID=NextID+1
where TableName=@TableName

if @@rowcount=0
begin
insert into IdentityID(TableName,NextID)
values(@TableName,@IdentityID+1)
end
commit tran

return @IdentityID
END
posted on 2011-08-10 15:36  MaoBisheng  阅读(3600)  评论(0编辑  收藏  举报