question: What the most samples failed for 可淇牌嬰幼兒配方乳粉 and had less than 1 samples taken?
answer: SELECT MAX(samples_failed) FROM table_name_77 WHERE product = "可淇牌嬰幼兒配方乳粉" AND samples_taken < 1
context: CREATE TABLE table_name_77 (samples_failed INTEGER, product VARCHAR, samples_taken VARCHAR)