CREATE TABLE table_47574 ("City" CLOB, "Country" CLOB, "IATA" CLOB, "ICAO" CLOB, "Airport" CLOB)

What is the ICAO when the IATA is tgg?
SELECT "ICAO" FROM table_47574 WHERE "IATA" = 'tgg'
SELECT "ICAO" FROM "table_47574" WHERE "IATA" = 'tgg'