declare @delStr nvarchar(500)
set @delStr='<script src=http://cn.daxia123.cn/cn.js></script>'
--set @delStr='<script src=http://cn.jxmmtv.com/cn.js></script>'
/****************************************/

/**********以下为操作实体************/
set nocount on

declare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int
declare @sql nvarchar(500)

set @iResult=0
declare cur cursor for
select name,id from sysobjects where xtype='U'

open cur
fetch next from cur into @tableName,@tbID

while @@fetch_status=0
begin
   declare cur1 cursor for
        --xtype in (231,167,239,175) 为char,varchar,nchar,nvarchar类型
        select name from syscolumns where xtype in (231,167,239,175) and id=@tbID
   open cur1
   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