CREATE TABLE table_203_113 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

what country won the most medals in shooting at the 1988 summer olympics ?
SELECT "nation" FROM table_203_113 ORDER BY "total" DESC LIMIT 1
SELECT "nation" FROM "table_203_113" ORDER BY "total" DESC NULLS LAST LIMIT 1