What is the average cost of the most popular visit reason? Name the average cost column as avgcost. • Popularity of visit reason is based on the number visits for each visit reason. • Also, report the name of the most popular visit reason (i.e., the result table should contain one row, two columns.)

You have the following tables:   MANAGERS (MANAGER_ID, LAST_NAME, FIRST_NAME, DEPARTMENT) ACCOUNTS (ACCOUNT_NUMBER, MANAGER_ID, CUST_ID, BALANCE) CUSTOMERS (CUST_ID, LAST_NAME, FIRST_NAME)   Write a SQL statement that lists account number, balance, MANAGER’s last name,  CUSTOMER ID, and CUSTOMER’s last name for every account in the ACCOUNTS table.

Consider the following table: Instructors ID 12121 15151 22222 32343 33456 name Alice Wu John Mozart Frank Einstein El Said Chelsea Dunn deptName Finances Music Physics History Physics salary 90000.00 40000.00 95000.00 60000.00 90000.00 Write a single SQL query to list in descending order the deptNames and names of all instructors. Note that every column of Instructors should be included in the result.

WorksOn Database: Employee (EmployeeNumber, EmployeeName, BirthDate, Title, Salary, DepartmentNumber) Project (ProjectNumber, ProjectName, Budget, DepartmentNumber) Department (DepartmentNumber, DepartmentName, ManagerNumber) WorksOn (EmployeeNumber, ProjectNumber, Responsibility, Hours) Questions: 1) Write an SQL query that returns the project number and name for projects with a budget no greater than $1,050,000. 2) Write an SQL query that returns all works on records where hours worked is less than 5 and the responsibility is 'Manager'. 3) Write an SQL query that returns the employees (number and name only) who have a title of 'EE' or 'SA' and make more than $50,000. 4) Write an SQL query that returns the employees (name and salary only) in department 'D1' ordered by decreasing salary. 5) Write an SQL query that returns the departments (all fields) ordered by descending department name.