CREATE TABLE table_204_371 (id DECIMAL, "team" TEXT, "competition" TEXT, "category" TEXT, "appearances\ start" DECIMAL, "appearances\ sub" DECIMAL, "goals" DECIMAL, "team record" TEXT)

name the earliest competition to have a sub .
SELECT "competition" FROM table_204_371 WHERE "appearances\nsub" > 0 ORDER BY id LIMIT 1
SELECT "competition" FROM "table_204_371" WHERE "appearances\nsub" > 0 ORDER BY "id" NULLS FIRST LIMIT 1