Ogbonna Basil basilcea

## app_session.sql
/*App usage data are kept in the following table:

TABLE sessions
  id INTEGER PRIMARY KEY,
  userId INTEGER NOT NULL,
  duration DECIMAL NOT NULL

Write a query that selects userId and average session duration for each user who has more than one session.*/

-- Example case create statement:
	/*App usage data are kept in the following table:

	TABLE sessions
	id INTEGER PRIMARY KEY,
	userId INTEGER NOT NULL,
	duration DECIMAL NOT NULL

	Write a query that selects userId and average session duration for each user who has more than one session.*/

	-- Example case create statement: