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mysql筛选GROUP BY多个字段组合时的用法分享_MySQL

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Release: 2016-06-01 13:20:52
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想实现这样一种效果

如果使用group by一个条件的话,得到的结果会少了很多,如何多个条件组合筛选呢

group by fielda,fieldb,fieldc...

循环的时候可以通过判断后一个跟前面一个是否相同来分组,一个示例

$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'];
}

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