What is the average number of draws that has a played entry of less than 30 and a goal difference greater than 2?
CREATE TABLE "group_i" (
  "position" real,
  "played" real,
  "points" real,
  "wins" real,
  "draws" real,
  "losses" real,
  "goals_for" real,
  "goals_against" real,
  "goal_difference" real
);
SELECT AVG("draws") FROM "group_i" WHERE "goal_difference">2 AND "played"<30;