How much Overall has a Pick # smaller than 20, and a Round smaller than 6?
CREATE TABLE "jacksonville_jaguars_draft_history" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);
SELECT SUM("overall") FROM "jacksonville_jaguars_draft_history" WHERE "pick_num"<20 AND "round"<6;