CREATE TABLE table_204_34 (id NUMBER, "rank" NUMBER, "nation" CLOB, "gold" NUMBER, "silver" NUMBER, "bronze" NUMBER, "total" NUMBER)

what is the difference in gold between algeria and cameroon ?
SELECT (SELECT "gold" FROM table_204_34 WHERE "nation" = 'algeria') - (SELECT "gold" FROM table_204_34 WHERE "nation" = 'cameroon')
SELECT (SELECT "gold" FROM "table_204_34" WHERE "nation" = 'algeria') - (SELECT "gold" FROM "table_204_34" WHERE "nation" = 'cameroon')