sql 查找数据库中某字符串所在的表及字段

declare   @str   varchar(100)  
  set   @str='是否严格控制'     --要搜索的字符串  
   
  declare   @s   varchar(8000)  
  declare   tb   cursor   local   for  
  select   s='if   exists(select   1   from   ['+b.name+']   where   ['+a.name+']   like   ''%'+@str+'%'')  
  print   ''所在的表及字段:   ['+b.name+'].['+a.name+']'''  
  from   syscolumns   a   join   sysobjects   b   on   a.id=b.id  
  where   b.xtype='U'   and   a.status>=0  
     and   a.xusertype   in(175,239,231,167)  
  open   tb  
  fetch   next   from   tb   into   @s  
  while   @@fetch_status=0  
  begin  
  exec(@s)  
  fetch   next   from   tb   into   @s  
  end  
  close   tb  
  deallocate   tb