CREATE TABLE table_test_12 ("id" INT, "serum_potassium" FLOAT, "left_ventricular_ejection_fraction_lvef" INT, "systolic_blood_pressure_sbp" INT, "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" INT, "symptomatic_hypotension" BOOLEAN, "kidney_disease" BOOLEAN, "NOUSE" FLOAT)

hemoglobin levels > 10.6 mmol / l;
SELECT * FROM table_test_12 WHERE hemoglobin_a1c_hba1c > 10.6
SELECT * FROM "table_test_12" WHERE "hemoglobin_a1c_hba1c" > 10.6