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  3. Introduction to Data Engineering

Exercise

Querying the table

Now that you have a grasp of what's happening in the datacamp_application database, let's go ahead and write up a query for that database.

The goal is to get a feeling for the data in this exercise. You'll get the rating data for three sample users and then use a predefined helper function, print_user_comparison(), to compare the sets of course ids these users rated.

Instructions

100 XP
  • Complete the connection URI. The database is called datacamp_application. The host is localhost with port 5432. The username is repl and the password is password.
  • Select the ratings of users with id: 4387, 18163 and 8770.
  • Fill in print_user_comparison() with the three users you selected.