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清空数据库中所有表记录记录ID恢复从0开始 - 站长搜索
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清空数据库中所有表记录记录ID恢复从0开始

数据库操作教程 2022-09-23 20:23:07 转载来源: 网络整理/侵权必删

1.搜索出所有表名,构造为一条SQL语句复制代码代码如下:declare@trun_namevarchar(8000)set@trun_name=''select@trun_name=@trun_name+'truncatetable'+[name]+''fromsysobjectswherextype='U'andstatus>0exec(@trun_name)该方法适合表不是非常多的情况,否则表数量过多,超过字符串的长度,不能进行完全清理

1.搜索出所有表名,构造为一条SQL语句
复制代码 代码如下:

declare @trun_name varchar(8000)
set @trun_name=''
select @trun_name=@trun_name + 'truncate table ' + [name] + ' ' from sysobjects where xtype='U' and status > 0
exec (@trun_name)

该方法适合表不是非常多的情况,否则表数量过多,超过字符串的长度,不能进行完全清理.
2.利用游标清理所有表
复制代码 代码如下:

declare @trun_name varchar(50)
declare name_cursor cursor for
select 'truncate table ' + name from sysobjects where xtype='U' and status > 0
open name_cursor
fetch next from name_cursor into @trun_name
while @@FETCH_STATUS = 0
begin
exec (@trun_name)
print 'truncated table ' + @trun_name
fetch next from name_cursor into @trun_name
end
close name_cursor
deallocate name_cursor

这是我自己构造的,可以做为存储过程调用, 能够一次清空所有表的数据,并且还可以进行有选择的清空表.
3.利用微软未公开的存储过程
复制代码 代码如下:

exec sp_msforeachtable "truncate table ?"

该方法可以一次清空所有表,但不能加过滤条件.

标签: 记录 清空 数据库 所有 ID 恢复 开始


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