serum 25 ( oh ) d levels < 20 ng / ml.
CREATE TABLE table_train_237 (
    "id" int,
    "fasting_c_peptide" float,
    "fasting_plasma_glucose" int,
    "smoking" bool,
    "body_mass_index_bmi" float,
    "serum_25_oh_d_levels" int,
    "NOUSE" float
)
SELECT * FROM table_train_237 WHERE serum_25_oh_d_levels < 20
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: serum 25 ( oh ) d levels < 20 ng / ml. ### Input: CREATE TABLE table_train_237 (
    "id" int,
    "fasting_c_peptide" float,
    "fasting_plasma_glucose" int,
    "smoking" bool,
    "body_mass_index_bmi" float,
    "serum_25_oh_d_levels" int,
    "NOUSE" float
) ### Response: SELECT * FROM table_train_237 WHERE serum_25_oh_d_levels < 20