SQL Challenges · THE GREAT DUCK MIGRATION!
Hometown Performance Analysis
Difficulty: medium
Mayor Mallory presents hometown performance statistics. Regional excellence drives migration success! Hometowns whose athletes average above the global performance mean produce superior talent. Athletes from these elite regions carry regional pride into battle. Sum their identification codes for the hometown champions registry!
Your task
Return the sum of SSNs for all ducks from hometowns where the average score of their athletes exceeds the global average score across all competitions. You will be working with the `duck_athletes` and `performance_records` tables.