用from的方法查找每个栏目下的最新商品,为什么查找出来的结果不正确 select goods_id,cat_id,goods_name from (select * from goods where 1 order by cat_id asc,goods_id desc)as tep group by cat_id;
2022-08-09回答次数:2访问次数:485
这有三张表商品表goods: 字段为 id、goods_id、goods_name、fee、duration、unit、create_time软件升级表upgrade: 字段为 id、app_name、china_name、app_version、force_upgrade、download_url、create_time软件名称价格明细表upgrade_access: 字段为 id、gid(go
2020-03-06回答次数:2访问次数:711
模型:建议更改方式名称public function goods_find(){ // $find = Goods::find(6); $find = Goods::where('id',27)->find();
2020-02-13回答次数:6访问次数:793
调用的代码是:function showlist(){$goods = new \Model\GoodsModel();var_dump($goods);$this -> display();
2019-08-01回答次数:1访问次数:859
buy.php里既没有定义这个goods二维数组,goodsList.php也没有发送过来这个数组
2019-02-25回答次数:2访问次数:1086
{ "pages":[ "pages/index/index", "pages/goods/index", "pages/goods/list", "pages/goods/details&qu
2018-12-13评论:0访问次数:126
$goods = D(“Goods”); $ar = array(‘goods_id’=>100,‘goods_name’=>’lenovo手机’,’goods_price’=>1200); $goods ->where(‘goods_id>50’)-> save($ar);function Update()
2019-03-15评论:0访问次数:242
{"pages": ["pages/index/index","pages/goods/index","pages/goods/list","pages/goods/details","pages/shop/list","pages/shop/order",&
2019-06-10评论:0访问次数:228
{"pages":["pages/index/index","pages/goods/index","pages/goods/list","pages/goods/details","pages/shop/list","pages/shop/order",&q
2019-02-18评论:0访问次数:227
{"pages":["pages/index/index","pages/goods/index","pages/goods/list","pages/goods/details","pages/shop/order","pages/my/index",&qu
2019-02-23评论:0访问次数:229
php mysql查询语句的写法如:【select * from goods where goods_id in ( select max(goods_id) from goods group by cat_id);】。
2020-11-03评论:0访问次数:3160
More businesses worldwide now accept SHIB as payment. From booking flights and ordering food to shopping for electronics and luxury goods, SHIB holders can...
2024-06-21评论:访问次数:213
php实现面包屑导航的方法:【public function mbx($cat_id){$goods_info = D('goods')->find( I ('get.goods_id') );$row = D('cat')->f...】。
2021-09-24评论:0访问次数:1800
php连接mysql并查询数据的方法:首先创建PHP示例文件;然后通过用户名密码连接数据库;最后通过查询语句“select* from goods”进行查询即可。
2020-10-13评论:0访问次数:3561
php sql子查询语句就是先通过一个语句来查询出一个结果,然后再通过一个查询语句从这个结果中再次查询,语句如“select max(goods_id),cat_id,goods_name from goods group by cat”。
2020-08-07评论:0访问次数:1828