CREATE TABLE table_68856 ("City" TEXT, "Country" TEXT, "IATA" TEXT, "ICAO" TEXT, "Airport" TEXT)

Name the ICAO for IATA of ccu
SELECT "ICAO" FROM table_68856 WHERE "IATA" = 'ccu'
SELECT "ICAO" FROM "table_68856" WHERE "IATA" = 'ccu'