Task: Text to Code
Input (English): Step 1: For each row in airport table, find the corresponding rows in flight table.
Step 2: find the number of rows of each value of airport_id in the results of step 1.
Step 3: find airport's id, name, ICAO of step 1 results with largest value in the results of step 2
Output (English): SELECT T1.id , T1.name , T1.ICAO FROM airport AS T1 JOIN flight AS T2 ON T1.id = T2.airport_id GROUP BY T2.airport_id ORDER BY Count ( * ) Desc LIMIT 1