CREATE TABLE table_train_203 ("id" INT, "gender" TEXT, "perforation" BOOLEAN, "hemoglobin_a1c_hba1c" FLOAT, "peptic_ulcer_disease" BOOLEAN, "serum_c_peptide" FLOAT, "gastrointestinal_disease" BOOLEAN, "serum_creatinine" FLOAT, "age" FLOAT, "NOUSE" FLOAT)

age > 18 years
SELECT * FROM table_train_203 WHERE age > 18
SELECT * FROM "table_train_203" WHERE "age" > 18