CREATE TABLE table_train_21 ("id" INT, "pregnancy_or_lactation" BOOLEAN, "severe_sepsis" BOOLEAN, "systolic_blood_pressure_sbp" INT, "active_infection" BOOLEAN, "limited_care" BOOLEAN, "septic_shock" BOOLEAN, "coagulopathy" BOOLEAN, "age" FLOAT, "lactate" INT, "NOUSE" FLOAT)

this will include patients that have 2 / 4 systemic inflammatory response syndrome criteria, a suspected infection and either a initial serum lactate > 4 mmol / l or a initial systolic blood pressure < 90 millimeters of mercury.
SELECT * FROM table_train_21 WHERE active_infection = 1 AND (lactate > 4 OR systolic_blood_pressure_sbp < 90)
SELECT * FROM "table_train_21" WHERE "active_infection" = 1 AND ("lactate" > 4 OR "systolic_blood_pressure_sbp" < 90)