带有GROUP BY的SQL PRoblem [英] SQL PRoblem with GROUP BY
问题描述
项目(upc,title,type,category,company,year,sellPrice)
购买(receiptId,date,cid,name,card#,expire,expectedDate,deliveredDate)
PurchaseItem(receiptId,upc,数量)
存储(名称,upc,股票)
显示畅销商品:用户提供日期和数字,比如n。所有商店都会在当天打印出n个畅销商品的清单。对于每个畅销书,系统显示标题,公司,当前库存和销售的份数。输出应根据销售情况订购:最畅销的商品应该是第一个,第二个应该是最好的等等。
这是我的SQL代码:
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项目(upc,title,type,category,company,year,sellPrice)
购买(receiptId,date,cid,name,card# ,expire,expectedDate,deliverDate)
PurchaseItem(receiptId,upc,quantity)
存储(名称,upc,股票)
显示畅销商品:用户提供日期和数字,例如n。所有商店都会在当天打印出n个畅销商品的清单。对于每个畅销书,系统显示标题,公司,当前库存和销售的份数。输出应根据销售情况订购:最畅销的商品应该是第一个,第二个应该是最好的等等。
这是我的SQL代码:
>展开 | 选择 | Wrap | 行号
项目(upc,title,type,category,company,year, buyPrice)
购买(receiptId,date,cid,name,card#,expire,expectedDate,deliverDate)
PurchaseItem(receiptId,upc,quantity)
存储(名称,upc,股票)
显示最畅销item:用户提供日期和数字,比如n。所有商店都会在当天打印出n个畅销商品的清单。对于每个畅销书,系统显示标题,公司,当前库存和销售的份数。输出应根据销售情况订购:最畅销的商品应该是第一个,第二个应该是最好的等等。
这是我的SQL代码:
>展开 | 选择 | Wrap | 行号
Item (upc, title, type, category, company, year, sellPrice)
Purchase (receiptId, date, cid, name, card#, expire, expectedDate, deliveredDate)
PurchaseItem (receiptId, upc, quantity)
Stored (name, upc, stock)
To show top selling item: The user provides a date and a number, say n. The system prints a list of the n best selling items on that day, by all the stores. For each best seller, the system shows the title, the company, the current stock and the number of copies sold. The output should be ordered according to sales: the best selling item should be first, the second best will follow, etc.
Here is my SQL code:
Expand|Select|Wrap|Line Numbers解决方案Hi,
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Item (upc, title, type, category, company, year, sellPrice)
Purchase (receiptId, date, cid, name, card#, expire, expectedDate, deliveredDate)
PurchaseItem (receiptId, upc, quantity)
Stored (name, upc, stock)
To show top selling item: The user provides a date and a number, say n. The system prints a list of the n best selling items on that day, by all the stores. For each best seller, the system shows the title, the company, the current stock and the number of copies sold. The output should be ordered according to sales: the best selling item should be first, the second best will follow, etc.
Here is my SQL code:
Expand|Select|Wrap|Line Numbers
Item (upc, title, type, category, company, year, sellPrice)
Purchase (receiptId, date, cid, name, card#, expire, expectedDate, deliveredDate)
PurchaseItem (receiptId, upc, quantity)
Stored (name, upc, stock)
To show top selling item: The user provides a date and a number, say n. The system prints a list of the n best selling items on that day, by all the stores. For each best seller, the system shows the title, the company, the current stock and the number of copies sold. The output should be ordered according to sales: the best selling item should be first, the second best will follow, etc.
Here is my SQL code:
Expand|Select|Wrap|Line Numbers
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