CREATE TABLE table_name_42 (build_date VARCHAR, total_produced VARCHAR, model VARCHAR)

What is the build date of the locomotives with a total produced less than 45 and a fb-2 model?
SELECT build_date FROM table_name_42 WHERE total_produced < 45 AND model = "fb-2"
SELECT "build_date" FROM "table_name_42" WHERE "fb-2" = "model" AND "total_produced" < 45