我创建了一个表goods,它的主键是goods_id,varchar(50),现在我想使用触发器实现,当往goods表里insert的时候,能够自动将goods_id列的值设置为A000000001,A000000002,A000000003......的形式
USE [cardsys]
GO
/****** 对象: Table [dbo].[goods] 脚本日期: 04/28/2009 21:38:53 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[goods](
[goods_id] [varchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL CONSTRAINT [DF_goods_goods_id] DEFAULT ((0)),
[goods_name] [varchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL,
[goods_type] [varchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL CONSTRAINT [DF_goods_goods_type] DEFAULT ('N/A'),
[goods_price] [money] NOT NULL CONSTRAINT [DF_goods_goods_price] DEFAULT ((0)),
[goods_integrate] [int] NOT NULL CONSTRAINT [DF_goods_goods_integrate] DEFAULT ((0)),
CONSTRAINT [PK_goods] PRIMARY KEY CLUSTERED
(
[goods_id] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[goods] WITH CHECK ADD CONSTRAINT [CK_goods] CHECK (([goods_type]='普通商品' OR [goods_type]='促销商品'))
GO
ALTER TABLE [dbo].[goods] CHECK CONSTRAINT [CK_goods]
以上是表的创建信息本人菜鸟···期待高手给出解答
USE [cardsys]
GO
/****** 对象: Table [dbo].[goods] 脚本日期: 04/28/2009 21:38:53 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[goods](
[goods_id] [varchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL CONSTRAINT [DF_goods_goods_id] DEFAULT ((0)),
[goods_name] [varchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL,
[goods_type] [varchar](50) COLLATE Chinese_PRC_CI_AS NOT NULL CONSTRAINT [DF_goods_goods_type] DEFAULT ('N/A'),
[goods_price] [money] NOT NULL CONSTRAINT [DF_goods_goods_price] DEFAULT ((0)),
[goods_integrate] [int] NOT NULL CONSTRAINT [DF_goods_goods_integrate] DEFAULT ((0)),
CONSTRAINT [PK_goods] PRIMARY KEY CLUSTERED
(
[goods_id] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[goods] WITH CHECK ADD CONSTRAINT [CK_goods] CHECK (([goods_type]='普通商品' OR [goods_type]='促销商品'))
GO
ALTER TABLE [dbo].[goods] CHECK CONSTRAINT [CK_goods]
以上是表的创建信息本人菜鸟···期待高手给出解答
自己参考了做吧
--根据输入类别自动生成编号示例--表
create table tab(a varchar(20),b varchar(100))
go--触发器
create trigger tr_insert on tab
instead of insert
as
declare @dt varchar(10)
set @dt='-'+convert(varchar(10),getdate(),120)select * into #t
from inserted a join(
select gid_new=b.a,sid_new=1000001+isnull(max(cast(right(a.a,5) as int)),0)
from tab a
right join inserted b on charindex(b.a+@dt,a.a)=1
group by b.a
)b on a.a=b.gid_new
order by b.gid_newdeclare @nid varchar(100),@a int
update #t set @a=case @nid when gid_new then @a+1 else sid_new end
,a=gid_new+@dt+'-'+right(@a,5)
,@nid=gid_newinsert tab select a,b from #t
go--插入数据
insert tab values('sj','2222')
insert tab select 'sj','324324'
union all select 'sj','33343'
union all select 'dj','33343'
union all select 'dj','24324'
union all select 'sj','24234'--显示插入结果
select * from tab order by a
go--删除测试
drop table tab/*--测试结果a b
-------------------- --------
dj-2004-07-1-00001 33343
dj-2004-07-1-00002 24324
sj-2004-07-1-00001 2222
sj-2004-07-1-00002 324324
sj-2004-07-1-00003 33343
sj-2004-07-1-00004 24234(所影响的行数为 6 行)
--*/