CREATE TABLE table_test_12 ("id" NUMBER, "serum_potassium" FLOAT, "left_ventricular_ejection_fraction_lvef" NUMBER, "systolic_blood_pressure_sbp" NUMBER, "haemoglobin" FLOAT, "consent" BOOLEAN, "hemoglobin_a1c_hba1c" FLOAT, "heart_disease" BOOLEAN, "renal_disease" BOOLEAN, "anaemia" BOOLEAN, "creatinine_clearance_cl" FLOAT, "estimated_glomerular_filtration_rate_egfr" NUMBER, "symptomatic_hypotension" BOOLEAN, "kidney_disease" BOOLEAN, "NOUSE" FLOAT)

anaemia ( haemoglobin < 12 g / dl ) .
SELECT * FROM table_test_12 WHERE anaemia = 1 OR haemoglobin < 12
SELECT * FROM "table_test_12" WHERE "anaemia" = 1 OR "haemoglobin" < 12