What is Sum of Round, when College/Junior/Club Team is Brandon Wheat Kings ( WHL ), when Player is Mike Perovich (D), and when Pick is less than 23?
CREATE TABLE "draft_picks" (
  "round" real,
  "pick" real,
  "player" text,
  "nationality" text,
  "college_junior_club_team" text
);
SELECT SUM("round") FROM "draft_picks" WHERE "college_junior_club_team"='brandon wheat kings ( whl )' AND "player"='mike perovich (d)' AND "pick"<23;