$product_data = $mysqli->query(
"SELECT
p.url as url,
p.description as description,
p.info as info,
p.note as note,
p.content as content,
p.name as pname,
p.icon as icon,
p.price as price,
p.original_price as original_price,
p.prod_id as prod_id,
p.stock as stock,
p.views as views,
s.name as sname,
c.name as cname,
p.add_time as add_time
FROM `product` as p
JOIN
`store` as s ON p.store_id = s.store_id
JOIN
`category` as c ON c.category_id = p.category_id
WHERE
p.active = 1
ORDER BY `prod_id` DESC
while($row = mysqli_fetch_array($product_data)){
$theme = $mysqli->query(
"SELECT
t.name as tname
FROM `product` as p
JOIN
`product_theme` as pt ON p.prod_id = pt.prod_id
JOIN
`theme` as t ON t.theme_id = pt.theme_id
WHERE
p.prod_id = '{$row['prod_id']}' "
);
$buyTotal = mysqli_fetch_array($mysqli->query(
"SELECT sum(quan) as quan FROM `stock`
WHERE
`prod_id` = '{$row['prod_id']}' "
));
$viewsIp = mysqli_num_rows($mysqli->query(
"SELECT * FROM `product_view`
WHERE
`prod_id` = '{$row['prod_id']}' "
));
$pre = mysqli_num_rows($mysqli->query(
"SELECT sum(quan) as quan FROM `user_pre`
WHERE
`prod_id` = '{$row['prod_id']}' "
));
}
直接不刪減,給大神們看看我的困擾
while 裡面的四個(gè)查詢都需要 $product_data
的 $row['prod_id']
然後這這四個(gè)查詢都會(huì)有其他不同的作用
例如顯示符合條件的有幾筆、印出某個(gè)欄位的加總
<?=$pre;?>
<?=$buyTotal['quan'];?>
都是透過這樣的方式。
當(dāng)然希望大神可以教教我,幫我簡(jiǎn)化簡(jiǎn)化,感激不盡。
你的查詢可以放到下面這一個(gè)SQL語句中完成
SELECT
p.url AS url,
p.description AS description,
p.info AS info,
p.note AS note,
p.content AS content,
p.name AS pname,
p.icon AS icon,
p.price AS price,
p.original_price AS original_price,
p.prod_id AS prod_id,
p.stock AS stock,
p.views AS views,
s.name AS sname,
c.name AS cname,
p.add_time AS add_time,
t.name AS tname, --theme name
(SELECT sum(quan)
FROM `stock` AS sto
WHERE sto.prod_id = p.prod_id) AS stock_quan, --Stock對(duì)應(yīng)的quan匯總
pv.*, --productView的所有字段
(SELECT sum(quan)
FROM `user_pre` AS up
WHERE up.prod_id = p.prod_id) AS user_pre_quan --UserPre對(duì)應(yīng)的quan匯總
FROM `product` AS p
JOIN
`store` AS s ON p.store_id = s.store_id
JOIN
`category` AS c ON c.category_id = p.category_id
JOIN
`product_theme` AS pt ON p.prod_id = pt.prod_id
JOIN
`theme` AS t ON t.theme_id = pt.theme_id
JOIN `product_view` AS pv
ON pv.prod_id = p.prod_id
WHERE
p.active = 1
ORDER BY `prod_id` DESC
北大青鳥APTECH成立于1999年。依托北京大學(xué)優(yōu)質(zhì)雄厚的教育資源和背景,秉承“教育改變生活”的發(fā)展理念,致力于培養(yǎng)中國IT技能型緊缺人才,是大數(shù)據(jù)專業(yè)的國家
北大青鳥中博軟件學(xué)院創(chuàng)立于2003年,作為華東區(qū)著名互聯(lián)網(wǎng)學(xué)院和江蘇省首批服務(wù)外包人才培訓(xùn)基地,中博成功培育了近30000名軟件工程師走向高薪崗位,合作企業(yè)超4
中公教育集團(tuán)創(chuàng)建于1999年,經(jīng)過二十年潛心發(fā)展,已由一家北大畢業(yè)生自主創(chuàng)業(yè)的信息技術(shù)與教育服務(wù)機(jī)構(gòu),發(fā)展為教育服務(wù)業(yè)的綜合性企業(yè)集團(tuán),成為集合面授教學(xué)培訓(xùn)、網(wǎng)
達(dá)內(nèi)教育集團(tuán)成立于2002年,是一家由留學(xué)海歸創(chuàng)辦的高端職業(yè)教育培訓(xùn)機(jī)構(gòu),是中國一站式人才培養(yǎng)平臺(tái)、一站式人才輸送平臺(tái)。2014年4月3日在美國成功上市,融資1
曾工作于聯(lián)想擔(dān)任系統(tǒng)開發(fā)工程師,曾在博彥科技股份有限公司擔(dān)任項(xiàng)目經(jīng)理從事移動(dòng)互聯(lián)網(wǎng)管理及研發(fā)工作,曾創(chuàng)辦藍(lán)懿科技有限責(zé)任公司從事總經(jīng)理職務(wù)負(fù)責(zé)iOS教學(xué)及管理工作。
浪潮集團(tuán)項(xiàng)目經(jīng)理。精通Java與.NET 技術(shù), 熟練的跨平臺(tái)面向?qū)ο箝_發(fā)經(jīng)驗(yàn),技術(shù)功底深厚。 授課風(fēng)格 授課風(fēng)格清新自然、條理清晰、主次分明、重點(diǎn)難點(diǎn)突出、引人入勝。
精通HTML5和CSS3;Javascript及主流js庫,具有快速界面開發(fā)的能力,對(duì)瀏覽器兼容性、前端性能優(yōu)化等有深入理解。精通網(wǎng)頁制作和網(wǎng)頁游戲開發(fā)。
具有10 年的Java 企業(yè)應(yīng)用開發(fā)經(jīng)驗(yàn)。曾經(jīng)歷任德國Software AG 技術(shù)顧問,美國Dachieve 系統(tǒng)架構(gòu)師,美國AngelEngineers Inc. 系統(tǒng)架構(gòu)師。