4. 请查找购买过 CategoryA 产品的客人,并计算每一位客人的平均订单金额(Amount), 一个订单编号(OrderID)算做一单。 分析思路: #[product]category='categoryA' #先根据categoryA找到购买productA,然后在此基础上对ordertable进行查询,条件product in (),按照name分组。 #平均金额=总金额/单数,=sum(amount)/...
Products Table Description Table: Products 二、题目信息 查询每个产品的最新订单,查询结果按 product_name,product_id,以及 order_id 升序排列。 Write an SQL query to find the most recent order(s) of each product. Return the result table sorted by product_name in ascending order and in case of ...
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sqlstate[23000]：完整性约束冲突：1048列“namaproduct”不能为null也就是说你的专栏namaproduct不可为...
Minimum Maximum Order (Pro): Let your merchants set a minimum or maximum limit on order amounts (quantity or price). Product Advertising (Pro): Let the Vendors promote their selected products. This will enhance their chance of attracting more customers, and you as the admin can charge for ...
A: The number is M*N. And if we put these M*N elements in a set there will not be duplicate elements to worry about . Q: If table A have 9 columns and table B have 5 columns. What's the cartesian product of the two tables?
I have the Microsoft Action pack with a visual studio subscription. As part of that, i have SQL server standard and Enterprise available for download. It says on the link that no keys are required. How is that possible? Is this only going to be like a 30 day trial? I need it longer...
(DATA_COMPRESSION=PAGE);GO--Generate script to set table page compression:SELECT'ALTER TABLE '+USER_NAME(o.uid)+'.'+o.name+' REBUILD WITH (DATA_COMPRESSION = PAGE);'[TXTSQL]FROMsysobjectsoWHEREUSER_NAME(o.uid)='prodlib'ANDo.type<>...
SQL Server 2016 and Azure SQL Database where new JSON support is available, enable you to combine best practices from relational and NoSQL models. You can store some common properties as standard table columns, put properties that are specific to some products in JSON documents, ...
But when you modify Oracle E-Business Suite data using anything other than Oracle E-Business Suite, you may change a row in one table without making corresponding changes in related tables. If your tables get out of synchronization with each other, you risk retrieving erroneous information and ...