In the grouping and lesson within this course, we wanted to pull out the row that had the earliest `create_date`. If we do `select min(create_date)`, and then pull ...

ERROR: subquery in FROM must have an alias at character 22 HINT: For example, FROM (SELECT ...) [AS] foo. STATEMENT: SELECT COUNT(*) FROM (SELECT b.bssid, AVG(b.signal_strength_average) AS ...