pgatterbauer / lab-aggregation-revisited-subqueries

Lab | Aggregation Revisited - Sub queries

In this lab, you will be using the Sakila database of movie rentals. You have been using this database for a couple labs already, but if you need to get the data again, refer to the official installation link.

Instructions

Write the SQL queries to answer the following questions:

• Select the first name, last name, and email address of all the customers who have rented a movie.

• What is the average payment made by each customer (display the customer id, customer name (concatenated), and the average payment made).

• Select the name and email address of all the customers who have rented the "Action" movies.

  • Write the query using multiple join statements
  • Write the query using sub queries with multiple WHERE clause and IN condition
  • Verify if the above two queries produce the same results or not

• Use the case statement to create a new column classifying existing columns as either or high value transactions based on the amount of payment. If the amount is between 0 and 2, label should be low and if the amount is between 2 and 4, the label should be medium, and if it is more than 4, then it should be high.