What is the sum of the Pick # Anthony Maddox?
CREATE TABLE "2004_nfl_draft" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);
SELECT SUM("pick_num") FROM "2004_nfl_draft" WHERE "name"='anthony maddox';