1: Use 要清空的数据库 go declare @a varchar(100) declare cur cursor for Select [name] from sysobjects where xtype = 'U' open cur fetch next from cur into @a while @@fetch_status = 0 begin exec('truncate table ' + @a) fetch next from cur into @a end close cur deallocate cur如果有外键,不行,这样1.数据库右键所有任务生成脚本,然后重建数据库 2.数据库右键所有任务导出数据,复制数据库对象,取消复制数据选项。 3.用存储过程: create proc up_010 as begin declare @sql varchar(99),@tbl varchar(30),@fk varchar(30) declare cur_fk cursor local for select object_name(constid),object_name(fkeyid) from sysreferences --删除所有外键 open cur_fk fetch cur_fk into @fk,@tbl while @@fetch_status =0 begin set @sql='alter table '+@tbl+' nocheck constraint '+@fk exec(@SQL) fetch cur_fk into @fk,@tbl end close cur_fk deallocate cur_fk --删除数据 declare @times int set @times=10 while @times<>0 begin declare cur_fks cursor local for select name from sysobjects where xtype='U' open cur_fks fetch cur_fks into @tbl while @@fetch_status =0 begin select @sql='delete from ['+@tbl+']' exec(@SQL) fetch cur_fks into @tbl end close cur_fks deallocate cur_fks set @times=@times-1 end --增加所以的外键 declare addcur_fk cursor local for select object_name(constid),object_name(fkeyid) from sysreferences open addcur_fk fetch addcur_fk into @fk,@tbl while @@fetch_status=0 begin set @sql='alter table '+@tbl+' check constraint '+@fk exec(@sql) fetch addcur_fk into @fk,@tbl end close addcur_fk deallocate addcur_fk -- end
--写的仓促,楼主可以优化一下--第一部分,生成建立外键的语句保存到#tmp declare @name varchar(200),@tmp1 varchar(500),@tmp2 varchar(500)create table #tmp ( string varchar(8000) )SELECT 表名称=object_name(b.fkeyid) ,外键名称=a.name ,引用的列名=(SELECT name FROM syscolumns WHERE colid=b.fkey AND id=b.fkeyid) ,引用的表名=object_name(b.rkeyid) ,已引用的列名=(SELECT name FROM syscolumns WHERE colid=b.rkey AND id=b.rkeyid) into #t FROM sysobjects a join sysforeignkeys b on a.id=b.constid join sysobjects c on a.parent_obj=c.id where a.xtype='f' AND c.xtype='U'declare cur_test cursor for select a.name from sysobjects a join sysobjects c on a.parent_obj=c.id where a.xtype='f' and c.xtype='U' open cur_test FETCH NEXT FROM cur_test INTO @name WHILE (@@fetch_status <> -1) BEGIN IF (@@fetch_status <> -2) BEGIN select @tmp1='',@tmp2='' select @tmp1=@tmp1+'['+引用的列名+'],',@tmp2=@tmp2+'['+已引用的列名+'],' from #t where 外键名称=@name insert into #tmp select top 1 'ALTER TABLE [DBO].['+表名称+'] ADD CONSTRAINT ['+@name+'] FOREIGN KEY ( '+left(@tmp1,len(@tmp1)-1)+' ) REFERENCES ['+引用的表名+'] ( '+left(@tmp2,len(@tmp2)-1)+' )' from #t where 外键名称=@name END FETCH NEXT FROM cur_test INTO @name ENDCLOSE cur_test DEALLOCATE cur_test drop table #t--第二部分,删除所有外键 DECLARE @STRING VARCHAR(8000) WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE TYPE='F') BEGIN SELECT @STRING='ALTER TABLE '+B.NAME+' DROP CONSTRAINT '+A.NAME+CHAR(13) FROM (SELECT PARENT_OBJ,NAME FROM SYSOBJECTS WHERE TYPE='F') A, (SELECT ID,NAME FROM SYSOBJECTS WHERE OBJECTPROPERTY(ID, N'ISUSERTABLE') = 1) B WHERE A.PARENT_OBJ=B.ID EXEC(@STRING) END--第三部分,删除所有表的记录,并且把identity复位 exec sp_msforeachtable "truncate table ?"--第4部分,执行#tmp里面的建立外键的语句,恢复外键 declare cur_test2 cursor for select string from #tmpopen cur_test2 FETCH NEXT FROM cur_test2 INTO @string WHILE (@@fetch_status <> -1) BEGIN IF (@@fetch_status <> -2) BEGIN exec(@string) PRINT @STRING END FETCH NEXT FROM cur_test2 INTO @string ENDCLOSE cur_test2 DEALLOCATE cur_test2drop table #tmp
Use 要清空的数据库
go
declare @a varchar(100)
declare cur cursor for
Select [name] from sysobjects where xtype = 'U'
open cur
fetch next from cur into @a
while @@fetch_status = 0
begin
exec('truncate table ' + @a)
fetch next from cur into @a
end
close cur
deallocate cur如果有外键,不行,这样1.数据库右键所有任务生成脚本,然后重建数据库
2.数据库右键所有任务导出数据,复制数据库对象,取消复制数据选项。
3.用存储过程:
create proc up_010
as
begin
declare @sql varchar(99),@tbl varchar(30),@fk varchar(30)
declare cur_fk cursor local for
select object_name(constid),object_name(fkeyid) from sysreferences
--删除所有外键
open cur_fk
fetch cur_fk into @fk,@tbl
while @@fetch_status =0
begin
set @sql='alter table '+@tbl+' nocheck constraint '+@fk
exec(@SQL)
fetch cur_fk into @fk,@tbl
end
close cur_fk
deallocate cur_fk
--删除数据
declare @times int
set @times=10
while @times<>0
begin
declare cur_fks cursor local for
select name from sysobjects where xtype='U'
open cur_fks
fetch cur_fks into @tbl
while @@fetch_status =0
begin
select @sql='delete from ['+@tbl+']'
exec(@SQL)
fetch cur_fks into @tbl
end
close cur_fks
deallocate cur_fks
set @times=@times-1
end
--增加所以的外键
declare addcur_fk cursor local for
select object_name(constid),object_name(fkeyid) from sysreferences
open addcur_fk
fetch addcur_fk into @fk,@tbl
while @@fetch_status=0
begin
set @sql='alter table '+@tbl+' check constraint '+@fk
exec(@sql)
fetch addcur_fk into @fk,@tbl
end
close addcur_fk
deallocate addcur_fk
--
end
--右键要清理的数据库
--所有任务
--生成SQL脚本
--<常规>里选择"生成全部对象脚本"","在脚本文件中包含说明性标题"选上
--<设置格式>里,将"包含扩展属性",选上
--<选项>中,将"表脚本选项"中的内容全部选择上
--<选项>中,全选
--其他所有的选项保持默认值
--然后确定,将其保存成一个.sql文件
然后断开对对要清空数据库的连接,查询分析器中执行上面的sql文件就可以了.
drop table [dbo].[XXX]
go
...create table [dbo].[XXX]
{
}
...ALTER TABLE [dbo].[XXX] WITH NOCHECK ADD
...
只是数据库不记录它的操作日志,是无法恢复数据的.不会把表删掉的
--运行下面语句前先备份sp_msforeachtable 'truncate table ?'
truncate table yourtable 以后,自增就会从1开始了,不需要做其他的了
declare @name varchar(200),@tmp1 varchar(500),@tmp2 varchar(500)create table #tmp
(
string varchar(8000)
)SELECT 表名称=object_name(b.fkeyid)
,外键名称=a.name
,引用的列名=(SELECT name FROM syscolumns WHERE colid=b.fkey AND id=b.fkeyid)
,引用的表名=object_name(b.rkeyid)
,已引用的列名=(SELECT name FROM syscolumns WHERE colid=b.rkey AND id=b.rkeyid)
into #t FROM sysobjects a
join sysforeignkeys b on a.id=b.constid
join sysobjects c on a.parent_obj=c.id
where a.xtype='f' AND c.xtype='U'declare cur_test cursor for
select a.name from sysobjects a join sysobjects c on a.parent_obj=c.id where a.xtype='f' and c.xtype='U'
open cur_test
FETCH NEXT FROM cur_test INTO @name
WHILE (@@fetch_status <> -1)
BEGIN
IF (@@fetch_status <> -2)
BEGIN
select @tmp1='',@tmp2=''
select @tmp1=@tmp1+'['+引用的列名+'],',@tmp2=@tmp2+'['+已引用的列名+'],' from #t where 外键名称=@name
insert into #tmp select top 1 'ALTER TABLE [DBO].['+表名称+'] ADD CONSTRAINT ['+@name+'] FOREIGN KEY ( '+left(@tmp1,len(@tmp1)-1)+' ) REFERENCES ['+引用的表名+'] ( '+left(@tmp2,len(@tmp2)-1)+' )' from #t where 外键名称=@name
END
FETCH NEXT FROM cur_test INTO @name
ENDCLOSE cur_test
DEALLOCATE cur_test
drop table #t--第二部分,删除所有外键
DECLARE @STRING VARCHAR(8000)
WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE TYPE='F')
BEGIN
SELECT @STRING='ALTER TABLE '+B.NAME+' DROP CONSTRAINT '+A.NAME+CHAR(13)
FROM (SELECT PARENT_OBJ,NAME FROM SYSOBJECTS WHERE TYPE='F') A,
(SELECT ID,NAME FROM SYSOBJECTS WHERE OBJECTPROPERTY(ID, N'ISUSERTABLE') = 1) B
WHERE A.PARENT_OBJ=B.ID
EXEC(@STRING)
END--第三部分,删除所有表的记录,并且把identity复位
exec sp_msforeachtable "truncate table ?"--第4部分,执行#tmp里面的建立外键的语句,恢复外键
declare cur_test2 cursor for select string from #tmpopen cur_test2
FETCH NEXT FROM cur_test2 INTO @string
WHILE (@@fetch_status <> -1)
BEGIN
IF (@@fetch_status <> -2)
BEGIN
exec(@string)
PRINT @STRING
END
FETCH NEXT FROM cur_test2 INTO @string
ENDCLOSE cur_test2
DEALLOCATE cur_test2drop table #tmp