8- Write a query to generate the total number of invoices, the invoice total for all of the invoices, the smallest of the customer purchase amounts, the largest of the customer purchase amounts, and the average of all the customer purchase amounts. The output must match Figure below. Total Invoices Total Sales Minimum Customer Purchases Largest Customer Purchases | Average Customer Purchases 34.97 8 1126.03 444.00 225.21

Challenge 1 v= Ⓒ Challenge #1 - Part 5 Task Determine what the sale price would be for each item if the Marketing team went off the rails and implemented a sale for 35% off the original price of all items! Once again, add this new column onto the end of your existing query and name it discount_35. ► Want a hint? III = query.sql + 1 SELECT *, original_price* (1 0.35) AS discount_35 2 FROM retail.products; 42442 3 5 product_id sku CT- BLK- 8 1 SQL Viewer 2 CT- BLK- 8.5 X + Cap Toe - Cap Toe product_type color size full_name category material created_at black 8.0 black 8.5 Cap Toe - Black - 8 Cap Toe - Black - 8.5 men men leather i leather X 2016-09- 12 2016-09- 12

SQL Server Please help answer question 5 Please type out the answer because I cannot read the last answer because the handwriting is not very clear.  Thank you.

SQL: For every invoice, display the invoice number, invoice date and the total dollar amount for all products purchased in the invoice, ordered by invoice number in descending order and then by invoice date in ascending order. Here you will use an aggregate SUM(x,y) function in your SELECT clause to calculate the total dollar amount (a calculated field – name it TOTAL). Don’t forget to join on the tables as well. [hint: you should have 8 rows of output ordered properly].   select inv_number, inv_date sum(list_price) as 'total' from invoice, line order by desc inv_num, asc inv_date. I am getting the error: ORA-00923: FROM keyword not found where expected   Am I formulating the query incorrectly?

b. Write a query to get the average salary and the total number of employees who work in the History department (in that order).   c. Write a query to get the number of employees working in the History department with a job title of Head of Department.