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

active liver disease
SELECT * FROM table_train_212 WHERE liver_disease = 1
SELECT * FROM "table_train_212" WHERE "liver_disease" = 1