From the following tables write a SQL query to list all salespersons along with customer name, city, grade, order number, date, and amount. Condition for selecting list of salesmen : 1. Salesmen who works for one or more customer or, 2. Salesmen who not yet join under any customer, Con...
一、题目介绍 有一张表,记录了乘客对于司机的评价,请找出每个星期当中连续获得 5 星好评最多的 driver_id。列名:driver_id、rating_time、ratings(原题乘客 id 对解答题目是冗余的,故此我在文中省略掉...)连续 5 星,中间出现任意一次非 5 星,则中断。 二、题目思路 想要答题的同学,可以先思考答案🤔。 ....
表2:Boxoffice(只读) 任务:Exercise 6 — Tasks Find the domestic and international sales for each movie Show the sales numbers for each movie that did better internationally rather than domestically List all the movies by their ratings in descending order INNER JOIN Select query with INNER JOIN on...
Complete SELECT query SELECT DISTINCT column, AGG_FUNC(column_or_expression), … FROM mytable JOIN another_table ON mytable.column = another_table.column WHERE constraint_expression GROUP BY column HAVING constraint_expression ORDER BY column ASC/DESC LIMIT count OFFSET COUNT; Each query begins ...
Exercise 通过教程前往。 Exercise中有一处的query中包含: WHEREtagsLIKE'%bigquery%' 其含义为:(答案来自GPT4o-mini) 这段代码是在 SQL 查询中使用的条件,用于从数据库中筛选出满足特定条件的记录。具体含义是:查找表中包含字段tags的记录,这些记录的tags值中包含字符串 "bigquery"。通配符%用于表示任意数量的字符...
此陳述式是使用 JOIN 運算子來結合 CustomerOrder 資料表和 Inventory 資料表資料的查詢。 其會列出客戶所下訂單的詳細資料,以及所訂購之每個項目的庫存資訊: sql 複製 SELECT * FROM Inventory JOIN CustomerOrder ON Inventory.Id = CustomerOrder.InventoryId 變更查詢以找出訂購柳橙之所有客戶的姓名。 sql 複製...
completion of each task. At the third stage which refers tooptimizingand begins with exercise #139, it is required not only to solve an exercise correctly, but also time of execution of inquiry should be commensurable with time of execution of the author's solution....
SQL SUBQUERIES Exercise, Practice and Solution: From the following tables, write a SQL query to find those employees whose salaries exceed 50% of their department's total salary bill. Return first name, last name.
If the security policy is created with SCHEMABINDING = ON (the default), then the join or function is accessible from the query and works as expected without any extra permission checks. If the security policy is created with SCHEMABINDING = OFF, then users will need SELECT permissions on ...
index_id) s left join sys.index_columns ic on ic.object_id = i.object_id and ic.index_id = i.index_id and ic.index_column_id = 2 where i.index_id = 1 and i.is_unique = 0 and ic.index_id is null order by s.equal_rows desc This query looks at clustered indexes that are...