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利用新建一个表,直接把不重复的数据导入.
<?php set_time_limit(13600); //设置时间 $conn=mysql_connect('localhost','root',''); //连接数据库 mysql_select_db('shuju',$conn); mysql_query("set names 'gbk'"); $query = mysql_query("select min(id) as mid from taobaoguanjianci group by title"); while($row = mysql_fetch_array($query)) { mysql_query("INSERT into taobaoguanjiancitmp select id,cid,title,cat,level3,cname from taobaoguanjianci where id=$row[mid]"); } ?>