CREATE TABLE "jacksonville_jaguars_draft_history" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);

Question: How many Rounds have a Defensive End Pick?
SQL: SELECT COUNT("round") FROM "jacksonville_jaguars_draft_history" WHERE "position"='defensive end';