CREATE TABLE table_train_149 ("id" NUMBER, "prostate_specific_antigen_psa" FLOAT, "c_peptide_level" FLOAT, "hemoglobin_a1c_hba1c" FLOAT, "fasting_serum_glucose" NUMBER, "vitamin_d" NUMBER, "NOUSE" FLOAT)

vitamin d level < 20
SELECT * FROM table_train_149 WHERE vitamin_d < 20
SELECT * FROM "table_train_149" WHERE "vitamin_d" < 20