36.choose the best answer View the Exhibits and examine the structures of the PRODUCTS, SALES, and CUSTOMERS tables. You issue the following query: SQL>SELECT p.prod_id,prod_name,prod_list_price, quantity_sold,cust_last_name FROM products p NATURAL J…

35.choose the best answer View the Exhibit and examine the description of the EMPLOYEES table. Evaluate the following SQL statement: SELECT first_name, employee_id, NEXT_DAY(ADD_MONTHS(hire_date,6),1) "Review" FROM employees; The query was writt…

34.choose two View the Exhibit and examine the structure of the PRODUCT_INFORMATION and INVENTORIES tables. You have a requirement from the supplies department to give a list containing PRODUCT_ID, SUPPLIER_ID, and QUANTITY_ON_HAND for all the produc…

33.choose the best answer View the Exhibit and examine the structure of the ORDER_ITEMS table. Examine the following SQL statement: SELECT order_id, product_id, unit_price FROM order_items WHERE unit_price = (SELECT MAX(unit_price) FROM order items G…

32.choose the best answer View the Exhibit and examine the data in EMP and DEPT tables. In the DEPT table, DEPTNO is the PRIMARY KEY. In the EMP table, EMPNO is the PRIMARY KEY and DEPTNO is the FOREIGN KEY referencing the DEPTNO column in the DEPT t…

31.choose the best answer Which statement is true regarding the USING clause in table joins? A) It can be used to access data from tables through equijoins as well as nonequijoins. B) It can be used to join tables that have columns with the same name…

30.choose the best answer Examine the commands used to create DEPARTMENT_DETAILS and COURSE_DETAILS: SQL> CREATE TABLE DEPARTMENT_DETAILS (DEPARTMENT_ID NUMBER PRIMARY KEY, DEPARTMENT_NAME VARCHAR2(50) , HOD VARCHAR2(50)); SQL> CREATE TABLE COURSE_D…

29.choose the best answer Evaluate the following query: SQL> SELECT promo_name || q'{'s start date was \}' || promo_begin_date AS "Promotion Launches" FROM promotions; What would be the outcome of the above query? A) It produces an error beca…

啤酒和饮料|2014年第五届蓝桥杯B组题解析第一题-fishers 啤酒和饮料 啤酒每罐2.3元,饮料每罐1.9元.小明买了若干啤酒和饮料,一共花了82.3元. 我们还知道他买的啤酒比饮料的数量少,请你计算他买了几罐啤酒. 注意:答案是一个整数.请通过浏览器提交答案. 不要书写任何多余的内容(例如:写了饮料的数量,添加说明文字等). 思路:列个方程组,两层循环枚举x和y的值(枚举啤酒个数和饮料个数) 代码: #include<iostream> using namespace std; dou…

soj 131 找题 给出两个长度为n,都含k个1的字符串A,B.现在令\(a_1,a_2,\dots,a_k\)是A中1的下标,\(b_1,b_2,\dots,b_k\)是B中1的下表,然后将a,b等概率随机排列,接下来按1到k的顺序交换\(A_{a_i}\)与\(A_{b_i}\).令P为交换之后A与B相同的概率,求\(P*(k!)^2\)对\(998244353\)取模的结果.n<=10000. 本来以为只要随机排列b就行了,但是由于是顺序交换,所以要随机排列必须a和b都排列一下.那怎么办…