Directions Perform the following tasks below by using the correct SQL statements

Question

Directions
Perform the following tasks below by using the correct SQL statements. Create the statements in Oracle by using the following steps (SQL > SQL commands > Enter Command). Once your command is error-free, copy and paste your statements into this assignment document. Upload this Word document for grading.
1. List all the employees in the emp table. If they work for department Accounting, then add 1200 to their salary. If they work for department Sales, then add 100 to their salary, otherwise add nothing to their salary.
2. List all the suppliers and the foods that they supply from the l_foods table. If supplier_id ASP provides the food, add 1 dollar to his price. If supplier_id, CBC supplies the food, add 2 dollars to his price. Otherwise, just show the price as is.
3. List the employee_id and employee_name of the employees form the l_employees table with the top 4 credit limits.
4. Change your answer from above to list those employees with the bottom 4 credit limits.
5. From the project, project_hours, and employee table, list the all the projects, the hours worked, and the date worked. (You will need this for the project).
6. Using the Lunches database, find the total amount spent on lunches by each employee. Show first_name, last_name, credit_limit, and total_price_spent in your results. Order your answer by total_price_spent in descending order. Only show the employees
who spent more than their credit limit (Modify question 9 from the last homework.)

7. Using the Lunches database, count the number of foods supplied by each supplier. List all the suppliers. Show the supplier_id, supplier_name, and number of foods from each supplier. Sort the rows on the supplier_id. Make sure you count all suppliers, even if they don’t supply foods.
8. Using the Lunches database, count the number of employees who work in each department. List all the departments. Show the department code, department name, and the number of employees. Sort on the dept_code. Make sure you count all employees, regardless of whether they work for departments or not.

Explanation / Answer

2)

SELECT supplier_name, description,
CASE supplier_id
WHEN ‘ASP’ THEN price + 1
WHEN ‘CBC’ THEN price + 2
ELSE price
END
“new_price” FROM l_foods f, l_suppliers s, WHERE f.supplier_id = s.supplier_id;

3)

Select employee_id, employee_name from l_employees
where (select top 4 creditlimit from l_employees)

4)

Select employee_id, employee_name from l_employees
where (select bottom 4 creditlimit from l_employees)

5)

SQL> Select project_name,project_hours,hours_worked,date_worked
From project;

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