CREATE TABLE table_203_497 (id NUMBER, "rank" NUMBER, "nation" CLOB, "gold" NUMBER, "silver" NUMBER, "bronze" NUMBER, "total" NUMBER)

how many more gold medals has nepal won than pakistan ?
SELECT (SELECT "gold" FROM table_203_497 WHERE "nation" = 'nepal') - (SELECT "gold" FROM table_203_497 WHERE "nation" = 'pakistan')
SELECT (SELECT "gold" FROM "table_203_497" WHERE "nation" = 'nepal') - (SELECT "gold" FROM "table_203_497" WHERE "nation" = 'pakistan')