please do in sql developer language

7. Print a greeting message like below. You must print the heading as is and print the date value as the date when the query is executed. It means that if you run the query on different dates, then the date value in the query result will change. So the date value in the output below is for reference purpose. Output: GREERING He11ol Today is Jan-19-2022 8. Given an ipad at $799.99, the tax rate 8\%, print the price before tax, tax rate, tax amount, the price after tax like below. Your query must use the computer to calculate the tax amount and price after tax. Please do NOt hard code the tax amount and the price after tax in your query. Norts: - donot create a NeW tabte when complenng this question. - do not insert any new row into any exiting table. - And you do Not NEED a new table or new rows to complete this question: 9. Primt the product id, the unit price betome the discount, and the discount amount of each product that was ordered. if a produet was ordered more than once, print its information only once. Sort the result in the decrealing order of the unit price before the discoune. NorE: The product returnod must have been ordered. HINT: you need to remove the duplicater using a keyword