Question: What's the highest rank of a pvg/zspd Code (IATA/ICAO) airport with a total cargo less than 2543394 metric tonnes?
SQL: SELECT MAX("Rank") FROM "2-1451581-4" WHERE "Code (IATA/ICAO)" = 'pvg/zspd' AND "Total Cargo (Metric Tonnes)" < 2543394.0;

Question: What's the average total cargo in metric tonnes that has an 11.8% Change?
SQL: SELECT AVG("Total Cargo (Metric Tonnes)") FROM "2-1451581-4" WHERE "% Change" = '11.8%';

Question: What is the highest rank of Tokyo International Airport?
SQL: SELECT MAX("Rank") FROM "2-1451581-4" WHERE "Airport" = 'Tokyo International Airport';