CREATE TABLE table_204_805 (id DECIMAL, "name" TEXT, "club" TEXT, "date of departure" TEXT, "replacement" TEXT, "date of appointment" TEXT)

who was appointed earlier , wichaya or pue on ?
SELECT "name" FROM table_204_805 WHERE "name" IN ('wisoon wichaya', 'piyapong pue-on') ORDER BY "date of appointment" LIMIT 1
SELECT "name" FROM "table_204_805" WHERE "name" IN ('wisoon wichaya', 'piyapong pue-on') ORDER BY "date of appointment" NULLS FIRST LIMIT 1