--要考虑一次可以插入多条记录的情况,因此应该用游标
CREATE TRIGGER [AddTable] ON [dbo].[User_ExamType]
FOR INSERT
AS
declare tb cursor local for
select '[dbo].['+rtrim(ET_TableName)+']' from inserted --直接从inserted逻辑表取数就行了
declare @tbname sysname
open tb
fetch tb into @tbname
while @@fetch_status=0
begin
if exists(select * from dbo.sysobjects where id = object_id(@tbname) and OBJECTPROPERTY(id, N'IsUserTable') = 1)
exec('drop table '+@tbname)
exec('
CREATE TABLE '+@tbname+' (
[Ques_ID] [int] IDENTITY (1, 1) NOT NULL ,
[Ques_Title] [nchar] (16) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_Type] [nchar] (30) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_IsPic] [bit] NOT NULL ,
[Ques_Sel1] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel2] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel3] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel4] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel5] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel6] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel7] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel8] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel9] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Answer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_GetPoint] [int] NULL ,
[Ques_PointID] [int] NULL ,
[Ques_BookAnswer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
')
fetch tb into @tbname
end
close tb
deallocate tb
go
CREATE TRIGGER [AddTable] ON [dbo].[User_ExamType]
FOR INSERT
AS
declare tb cursor local for
select '[dbo].['+rtrim(ET_TableName)+']' from inserted --直接从inserted逻辑表取数就行了
declare @tbname sysname
open tb
fetch tb into @tbname
while @@fetch_status=0
begin
if exists(select * from dbo.sysobjects where id = object_id(@tbname) and OBJECTPROPERTY(id, N'IsUserTable') = 1)
exec('drop table '+@tbname)
exec('
CREATE TABLE '+@tbname+' (
[Ques_ID] [int] IDENTITY (1, 1) NOT NULL ,
[Ques_Title] [nchar] (16) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_Type] [nchar] (30) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_IsPic] [bit] NOT NULL ,
[Ques_Sel1] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel2] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel3] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel4] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel5] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel6] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel7] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel8] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel9] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Answer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_GetPoint] [int] NULL ,
[Ques_PointID] [int] NULL ,
[Ques_BookAnswer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
')
fetch tb into @tbname
end
close tb
deallocate tb
go
select max(id) from 表--如果你的表中id是自增字段,可以用下面的语句取出刚插入的id
select scope_identity()
SCOPE_IDENTITY
返回插入到同一作用域中的 IDENTITY 列内的最后一个 IDENTITY 值。一个作用域就是一个模块——存储过程、触发器、函数或批处理。因此,如果两个语句处于同一个存储过程、函数或批处理中,则它们位于相同的作用域中。语法
SCOPE_IDENTITY( )返回类型
sql_variant注释
SCOPE_IDENTITY、IDENT_CURRENT 和 @@IDENTITY 在功能上相似,因为它们都返回插入到 IDENTITY 列中的值。 IDENT_CURRENT 不受作用域和会话的限制,而受限于指定的表。IDENT_CURRENT 返回为任何会话和作用域中的特定表所生成的值。有关更多信息,请参见 IDENT_CURRENT。SCOPE_IDENTITY 和 @@IDENTITY 返回在当前会话中的任何表内所生成的最后一个标识值。但是,SCOPE_IDENTITY 只返回插入到当前作用域中的值;@@IDENTITY 不受限于特定的作用域。例如,有两个表 T1 和 T2,在 T1 上定义了一个 INSERT 触发器。当将某行插入 T1 时,触发器被激发,并在 T2 中插入一行。此例说明了两个作用域:一个是在 T1 上的插入,另一个是作为触发器的结果在 T2 上的插入。假设 T1 和 T2 都有 IDENTITY 列,@@IDENTITY 和 SCOPE_IDENTITY 将在 T1 上的 INSERT 语句的最后返回不同的值。@@IDENTITY 返回插入到当前会话中任何作用域内的最后一个 IDENTITY 列值,该值是插入 T2 中的值。SCOPE_IDENTITY() 返回插入 T1 中的 IDENTITY 值,该值是发生在相同作用域中的最后一个 INSERT。如果在作用域中发生插入语句到标识列之前唤醒调用 SCOPE_IDENTITY() 函数,则该函数将返回 NULL 值。有关说明,请参见示例。示例
下列示例将创建两个表 TZ 和 TY,并在 TZ 上创建一个 INSERT 触发器。当将某行插入表 TZ 中时,触发器 (Ztrig) 将激发并在 TY 中插入一行。USE tempdb
GO
CREATE TABLE TZ (
Z_id int IDENTITY(1,1)PRIMARY KEY,
Z_name varchar(20) NOT NULL)INSERT TZ
VALUES ('Lisa')
INSERT TZ
VALUES ('Mike')
INSERT TZ
VALUES ('Carla')SELECT * FROM TZ--Result set: This is how table TZ looks
Z_id Z_name
-------------
1 Lisa
2 Mike
3 CarlaCREATE TABLE TY (
Y_id int IDENTITY(100,5)PRIMARY KEY,
Y_name varchar(20) NULL)INSERT TY (Y_name)
VALUES ('boathouse')
INSERT TY (Y_name)
VALUES ('rocks')
INSERT TY (Y_name)
VALUES ('elevator')SELECT * FROM TY
--Result set: This is how TY looks:
Y_id Y_name
---------------
100 boathouse
105 rocks
110 elevator/*Create the trigger that inserts a row in table TY
when a row is inserted in table TZ*/
CREATE TRIGGER Ztrig
ON TZ
FOR INSERT AS
BEGIN
INSERT TY VALUES ('')
END/*FIRE the trigger and find out what identity values you get
with the @@IDENTITY and SCOPE_IDENTITY functions*/
INSERT TZ VALUES ('Rosalie')SELECT SCOPE_IDENTITY() AS [SCOPE_IDENTITY]
GO
SELECT @@IDENTITY AS [@@IDENTITY]
GO--Here is the result set.
SCOPE_IDENTITY
4
/*SCOPE_IDENTITY returned the last identity value in the same scope, which was the insert on table TZ*/@@IDENTITY
115
/*@@IDENTITY returned the last identity value inserted to TY by the trigger, which fired due to an earlier insert on TZ*/
变量没有被解释出来,他就建了一个+@tbname+的表
FOR INSERT
AS
declare tb cursor local for
select '[dbo].[Questeion_'+rtrim(ET_TableName)+']' from inserted --直接从inserted逻辑表取数就行了
declare @tbname sysname
open tb
fetch tb into @tbname
while @@fetch_status=0
begin
if exists(select * from dbo.sysobjects where id = object_id(@tbname) and OBJECTPROPERTY(id, N'IsUserTable') = 1)
exec('drop table '+@tbname)
exec('
CREATE TABLE '+@tbname+' (
[Ques_ID] [int] IDENTITY (1, 1) NOT NULL ,
[Ques_Title] [nchar] (16) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_Type] [nchar] (30) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_IsPic] [bit] NOT NULL ,
[Ques_Sel1] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel2] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel3] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel4] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel5] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel6] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel7] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel8] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel9] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Answer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_GetPoint] [int] NULL ,
[Ques_PointID] [int] NULL ,
[Ques_BookAnswer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
')
fetch tb into @tbname
end
close tb
deallocate tb
go
create table [dbo].[User_ExamType](ET_ID int identity,ET_Name nvarchar(50),ET_TableName nvarchar(50))
go--要考虑一次可以插入多条记录的情况,因此应该用游标
CREATE TRIGGER [AddTable] ON [dbo].[User_ExamType]
FOR INSERT
AS
declare tb cursor local for
select '[dbo].[Questeion_'+rtrim(ET_TableName)+']' from inserted --直接从inserted逻辑表取数就行了
declare @tbname sysname
open tb
fetch tb into @tbname
while @@fetch_status=0
begin
if exists(select * from dbo.sysobjects where id = object_id(@tbname) and OBJECTPROPERTY(id, N'IsUserTable') = 1)
exec('drop table '+@tbname)
exec('
CREATE TABLE '+@tbname+' (
[Ques_ID] [int] IDENTITY (1, 1) NOT NULL ,
[Ques_Title] [nchar] (16) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_Type] [nchar] (30) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_IsPic] [bit] NOT NULL ,
[Ques_Sel1] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel2] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel3] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel4] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel5] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel6] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel7] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel8] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel9] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Answer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_GetPoint] [int] NULL ,
[Ques_PointID] [int] NULL ,
[Ques_BookAnswer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
')
fetch tb into @tbname
end
close tb
deallocate tb
go--插入记录测试
insert [dbo].[User_ExamType] values('aa','aa_tb')
insert [dbo].[User_ExamType] select 'aa','aa_tb'
union all select 'bb','bb_tb'
go--显示触发器创建的表
select name from sysobjects where name like 'Questeion_%' and objectproperty(id,'Isusertable')=1
go--删除测试
drop table [dbo].[User_ExamType],Questeion_aa_tb,Questeion_bb_tb
/*--测试结果name
-------------------------
Questeion_aa_tb
Questeion_bb_tb(所影响的行数为 2 行)
--*/
create table '+@tbname+'
可以建表,但是表名是+@tbname+
可以加我QQ吗28738411
我把脚本发给你,是不是表名不支持用变量呢
FOR INSERT
AS
declare tb cursor local for
select '[dbo].[Questeion_'+rtrim(ET_TableName)+']' from inserted --直接从inserted逻辑表取数就行了
declare @tbname sysname
open tb
fetch tb into @tbname
while @@fetch_status=0
begin
if exists(select * from dbo.sysobjects where id = object_id(@tbname) and OBJECTPROPERTY(id, N'IsUserTable') = 1)
exec('drop table '+@tbname)
exec('
CREATE TABLE '+@tbname+' (
[Ques_ID] [int] IDENTITY (1, 1) NOT NULL ,
[Ques_Title] [nchar] (16) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_Type] [nchar] (30) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_IsPic] [bit] NOT NULL ,
[Ques_Sel1] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel2] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel3] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel4] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel5] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel6] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel7] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel8] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel9] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Answer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_GetPoint] [int] NULL ,
[Ques_PointID] [int] NULL ,
[Ques_BookAnswer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
')
fetch tb into @tbname
end
close tb
deallocate tb
go按你给我的写,说tb错误,麻烦你了.
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[User_ExamType]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[User_ExamType]
GOCREATE TABLE [dbo].[User_ExamType] (
[ET_ID] [smallint] IDENTITY (1, 1) NOT NULL ,
[ET_Name] [nchar] (50) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[ET_TableID] AS ('Question_' + convert(char(5),replace(convert(char(6),convert(float,([ET_ID] * 0.0001))),'.','')))
) ON [PRIMARY]
GO
drop table [dbo].[User_ExamType]
GOCREATE TABLE [dbo].[User_ExamType] (
[ET_ID] [smallint] IDENTITY (1, 1) NOT NULL ,
[ET_Name] [nchar] (50) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[ET_TableID] AS ('Question_' + convert(char(5),replace(convert(char(6),convert(float,([ET_ID] * 0.0001))),'.','')))
) ON [PRIMARY]
GO--触发器
CREATE TRIGGER [AddTable] ON [dbo].[User_ExamType]
FOR INSERT
AS
declare tb cursor local for
select '[dbo].['+rtrim(ET_TableID)+']' from inserted --直接从inserted逻辑表取数就行了
declare @tbname sysname
open tb
fetch tb into @tbname
while @@fetch_status=0
begin
if exists(select * from dbo.sysobjects where id = object_id(@tbname) and OBJECTPROPERTY(id, N'IsUserTable') = 1)
exec('drop table '+@tbname)
exec('
CREATE TABLE '+@tbname+' (
[Ques_ID] [int] IDENTITY (1, 1) NOT NULL ,
[Ques_Title] [nchar] (16) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_Type] [nchar] (30) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[Ques_IsPic] [bit] NOT NULL ,
[Ques_Sel1] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel2] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel3] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel4] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel5] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel6] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel7] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel8] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Sel9] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_Answer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL ,
[Ques_GetPoint] [int] NULL ,
[Ques_PointID] [int] NULL ,
[Ques_BookAnswer] [nchar] (200) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
')
fetch tb into @tbname
end
close tb
deallocate tb
go--插入记录测试
insert [dbo].[User_ExamType](ET_Name) values('aa')
insert [dbo].[User_ExamType](ET_Name) select 'aa'
union all select 'bb'
go--显示触发器创建的表
select name from sysobjects where name like 'Question_%' and objectproperty(id,'Isusertable')=1
go--删除测试
drop table [dbo].[User_ExamType],Question_00001,Question_00002,Question_00003/*--测试结果name
----------------------
Question_00001
Question_00002
Question_00003(所影响的行数为 3 行)
--*/
就是要加exec