CREATE TABLE table_train_241 ("id" NUMBER, "blood_sugars" NUMBER, "c_peptide_level" FLOAT, "hemoglobin_a1c_hba1c" FLOAT, "glucometer" BOOLEAN, "creatinine_clearance_cl" FLOAT, "symptoms_hypoglycemic_episodes" BOOLEAN, "hypoglycemia" BOOLEAN, "hba1c" FLOAT, "diabetes" BOOLEAN, "NOUSE" FLOAT)

creatinine clearance < 60 ;
SELECT * FROM table_train_241 WHERE creatinine_clearance_cl < 60
SELECT * FROM "table_train_241" WHERE "creatinine_clearance_cl" < 60