CREATE TABLE table_name_15 (year VARCHAR2, location VARCHAR2, loser VARCHAR2)

How many years did the new york giants lose at metlife stadium?
SELECT COUNT(year) FROM table_name_15 WHERE location = "metlife stadium" AND loser = "new york giants"
SELECT COUNT("year") FROM "table_name_15" WHERE "location" = "metlife stadium" AND "loser" = "new york giants"