mysql筛选GROUP BY多个字段组合时的用法分享

group by fielda,fieldb,fieldc...

$result = mysql_query("SELECT groups,name,goods FROM table GROUP BY groups,name ORDER BY name"); 
$arr = array(); 
$i = 0; 
while($row = mysql_fetch_array($result)){ 
$arr[] = $row; 
} 

$m = $i - 1; 
foreach($arr as $k=>$v){ 
if($v[$i]['groups'] <> $v[$m]['groups']){ 
echo '分割符号'; 
} 
echo $v['name'],$v['goods']; 
}