SQL之按兩個字段分類匯總

目的：

同時按“游戲代號”和“禮包名”分類匯總，然后獲取下拉框的數據。

 如下圖所示：

 

SQL查詢

select game,giftname from qyg_gifts group by game , giftname 

 

//連接mysql數據庫
$conn = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("connect failed" . mysql_error()); mysql_select_db(DB_DATABASENAME, $conn); $existing_gift= [];  //現存的禮包
$sql="select game,giftname from qyg_gifts group by game,giftname  "; $query=mysql_query($sql); while($row = mysql_fetch_array($query)){ array_push($existing_gift, [$row[game],$row[giftname] ]); } mysql_close($conn);