CREATE TABLE table_train_212 ("id" INT, "pregnancy_or_lactation" BOOLEAN, "postmeal_c_peptide" FLOAT, "chemotherapy" BOOLEAN, "liver_disease" BOOLEAN, "alcohol_abuse" BOOLEAN, "NOUSE" FLOAT)

postmeal c peptide > 0.3 mg / dl
SELECT * FROM table_train_212 WHERE postmeal_c_peptide > 0.3
SELECT * FROM "table_train_212" WHERE "postmeal_c_peptide" > 0.3