CREATE TABLE table_name_7 (silver NUMBER, gold VARCHAR2, total VARCHAR2, nation VARCHAR2)

I want to know the highest silver for total of 4 for poland and gold less than 1
SELECT MAX(silver) FROM table_name_7 WHERE total = 4 AND nation = "poland" AND gold < 1
SELECT MAX("silver") FROM "table_name_7" WHERE "gold" < 1 AND "nation" = "poland" AND "total" = 4