好用的清理数据库脚本

1、脚本说明

此脚本用于清空数据库数据，只删除相关表记录，保留表结构及存储过程触发器等主要架构。

设计思路：

1）根据表添加时间逆向获取所有用户表信息

2）使用游标循环删除每张表内数据

3）使用delete进行删除，即使有外键关系同样可以删除表记录

4）表存在自增主键则将其重置为0

5）截断日志，将数据库表空间及日志文件缩减到最小

2、使用说明

1）建立删除数据库存储过程SP_DaTaBaSeClear

If( object_id(\'SP_DaTaBaSeClear\') is not null )  
drop procedure SP_DaTaBaSeClear  
go  
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE SP_DaTaBaSeClear
AS
Begin Transaction  
declare @BtableName varchar(200)  
declare curDel cursor for select rtrim(name) from sysobjects where type = \'U\' order by crdate desc  
open curDel  
declare @delSQL varchar(500)  
fetch next from curDel into @BtableName  
while( @@fetch_status = 0)  
begin  
set @delSQL = \'delete from \' + @BtableName  
print @delSQL  
exec( @delSQL )  
if( ident_seed(@BtableName) is not null )  
begin  
dbcc checkident( @BtableName, reseed, 0 )  
print \'种子成功置为1\'  
end  
fetch next from curDel into @BtableName  
end  
close curDel  
deallocate curDel  
Commit  
GO

2）执行该存储过程，执行过程中查看执行信息，如有红色信息则先手动删除红色信息表记录

-- 执行存储过程删除表数据

EXEC SP_DaTaBaSeClear

3）如仍然报出红色信息则直接执行以下语句进行删除

    declare @BtableName varchar(128)  
declare curDel cursor for select rtrim(name) from sysobjects where type = \'U\' order by crdate desc  
open curDel  
declare @delSQL varchar(255)  
fetch next from curDel into @BtableName  
while( @@fetch_status = 0)  
begin  
set @delSQL = \'delete from \' + @BtableName  
print @delSQL  
exec( @delSQL )  
if( ident_seed(@BtableName) is not null )  
begin  
dbcc checkident( @BtableName, reseed, 0 )  
print \'种子成功置为1\'  
end  
fetch next from curDel into @BtableName  
end  
close curDel  
deallocate curDel

4）最后执行脚本重置数据库大小

backup log @DataBaseName with no_log  
dbccshrinkdatabase(@DataBaseName)

dbccupdateusage(@DataBaseName)