Rumah >pembangunan bahagian belakang >tutorial php >while循环中的query如何簡化?
我在這裡貼完整的語法 煩請各位mysql大師鑑定
<code>$gettimeline = mysql_query("SELECT * FROM `timeline` LEFT JOIN `users_profile` USING (id) ORDER BY `addtime_timeline` DESC "); </code>
以上是找timeline資料表並以addtime_timeline排列
<code>while ($row=mysql_fetch_array($gettimeline)){ 印出timeline的欄位資料 } </code>
以上是印出timeline資料的循环
在循环中我會加入query 如下
<code>while ($row=mysql_fetch_array($gettimeline)){ $GETthumb1 = mysql_query("SELECT * FROM `timeline_thumb` WHERE `id` = '".$_SESSION['userid']."' AND `by_timeline_id` = '".$row['timeline_id']."' AND `thumb_type` = '1' "); $pub_GETthumb1 = mysql_query("SELECT * FROM `timeline_thumb` WHERE `by_timeline_id` = '".$row['timeline_id']."' AND `thumb_type` = '1' "); $pub_GETinfo = mysql_query("SELECT * FROM `timeline_thumb` JOIN `users_profile` USING (id) WHERE `by_timeline_id` = '".$row['timeline_id']."' ORDER BY `addtime_thumb` DESC "); $get_comment = mysql_query("SELECT * FROM `timeline_comment` JOIN `users_profile` USING (id) WHERE `re_timeline_id` = '".$row['timeline_id']."' ORDER BY `addtime_comment` DESC "); $get_comment_num = mysql_query("SELECT * FROM `timeline_comment` WHERE `re_timeline_id` = '".$row['timeline_id']."' "); } </code>
GETthumb1是找timeline_thumb資料表中與timeline(timeline_id)相符的id(by_timeline_id)有幾筆(抓出用戶自身有幾筆)。
pub_GETthumb1則是總共有幾筆。
pub_GETinfo是抓出用戶的資料與users_profile (id)對應。
get_comment是抓出timeline_comment資料表中與timeline(timeline_id)相符的id(re_timeline_id)有幾筆並抓出用戶的資料與users_profile (id)對應。
get_comment_num是抓出總共有幾筆。
有將mysql查詢簡化的空間嗎?........