CREATE TABLE table_name_73 (floors NUMBER, built VARCHAR2, rank VARCHAR2)

What's the total number of floors built after 2006, and have a rank of 12?
SELECT SUM(floors) FROM table_name_73 WHERE built > 2006 AND rank = 12
SELECT SUM("floors") FROM "table_name_73" WHERE "built" > 2006 AND "rank" = 12