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µÚÒ»´ÎʹÓÃdistinct³¢ÊÔÈçÏ£¬µ«Ê§°Ü£¬ÒòΪdistinct daima¶ÔÓÚ¡°×îºó¸üÐÂʱ¼ä¡±Õâ¶Î´úÂëÎÞЧ


PHP code:
$result=mysql_query("SELECT distinct daima, id from db WHERE id='$id'");
while($row=mysql_fetch_array($result)){
echo $row["case_id"]."<br />";
}

$result=mysql_query("SELECT distinct daima, id, start_time from db WHERE id='$id'");
while($row=mysql_fetch_array($result)){
echo $row["start_time"]."<br />";
}



µÚ¶þ´ÎʹÓÃSELECT * from db WHERE id='$id' ORDER BY start_time DESC LIMIT 1
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SQL code:

select bh,max(UNIX_TIMESTAMP(sj)) from tt group by bh



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