前面的后台
1.INSERT goods VALUES(‘6‘,‘大盘鸡‘,‘7.00‘,‘0.75‘,‘6‘,‘6‘,‘4‘,‘挺辣的‘,‘4‘);
/外卖基本信息录入/
2.UPDATE goods SET title=‘烧饼‘ WHERE goodsld=‘1‘;
/外卖信息修改/
3.UPDATE goods SET discount=‘0.50‘ WHERE goodsld=‘1‘;
/外卖销售折扣设置/
4.SELECT invoicecontent FROM orders WHERE invoicecontent NOT IN (‘未付款‘);
/订单发货/
5.SELECT *FROM orders WHERE prderno=‘20110508004‘;
/订单信息查询(可随时查询订单货物的情况)/
6.UPDATE customers SET account=‘1000‘ WHERE custld=‘1‘;
/用户账户充值/
7.UPDATE customers SET longinpwd=‘888888‘ WHERE custld=‘3‘;
/用户密码修改/
前台
1.SELECT *FROM goods;
/请查询出所有外卖商品编号、名称、定价、折扣、分类编号、商家编号、评分、描述、包装费/
2.SELECT *FROM goods WHERE goodsld=(SELECT cate FROM category WHERE catename=‘川湘菜‘);
/查询"川湘菜"类型的所有外卖商品信息/
3.SELECT *FROM goods WHERE title=‘大盘鸡‘;
/请查询出所有包含"大盘鸡"标题的外卖商品/
4.SELECT *FROM goods WHERE packingexpense=‘5‘ AND description LIKE ‘%辣%‘;
/请查询出所有评分为5并且描述中含有麻辣内容的外卖商品/
5.SELECT *FROM goods WHERE goodsld=(SELECT cate FROM category WHERE cate=‘24‘);
/查询编号为24的外卖商品编号、名称、定价、折扣、分类编号、商家编号、评分、描述、包装费/
6.SELECT orderld FROM orderdetails WHERE goodsld<=‘10‘ ORDER BY qty ASC;
/畅销外卖商品查询，销售数量前10名的外卖商品编号/
7.SELECT *FROM orders WHERE custld=(SELECT custld FROM customers WHERE custname=‘黄雅玲‘);
/客户订单查询。黄雅玲已经登陆了网站，他需要查看自己的所有历史订单信息(不需要订单明细)/
8.SELECT title FROM goods WHERE goodsld=(SELECT cate FROM category WHERE catename=‘川湘菜‘ AND cate=(SELECT storeld FROM store WHERE personspending>30 AND personspending<50));
/请查询出人均消费在30-50之间并且是川湘菜的外卖商品/
9.SELECT c.cateName,a.title,b.unitprice as 销售总额 FROM goods a,orderdetails b,category c WHERE a.goodsld=b.goodsld and a.cateld=c.cate;
/查询出所有每种类型的外卖商品的总销售额/
10.SELECT SUM(unitprice) as 销售总额 FROM orderdetails;
/请查询出今天外卖销售总额/
11.SELECT a.title,b.qty FROM goods a,orderdetails b WHERE a.goodsld=b.goodsld;
/统计出每个类别的外卖商品数量/
12.SELECT *FROM goods WHERE title=‘张三大盘鸡‘;
/查询出所有"张三大盘鸡"的外卖商品/
原文地址：https://www.cnblogs.com/zhe1314/p/11632180.html