CREATE TABLE table_train_220 ("id" INT, "hemoglobin_a1c_hba1c" FLOAT, "renal_disease" BOOLEAN, "creatinine_clearance_cl" FLOAT, "fasting_plasma_glucose" INT, "hba1c" FLOAT, "serum_creatinine" FLOAT, "body_mass_index_bmi" FLOAT, "NOUSE" FLOAT)

body mass index < 42 kg / m^2
SELECT * FROM table_train_220 WHERE body_mass_index_bmi < 42
SELECT * FROM "table_train_220" WHERE "body_mass_index_bmi" < 42