Name the average concacaf for merconorte larger than 0 and player of jared borgetti
CREATE TABLE "most_appearances" (
  "player" text,
  "period" text,
  "league" real,
  "concacaf" real,
  "libertadores" real,
  "merconorte" real,
  "inter_liga" real,
  "superliga" real,
  "matches" real
);
SELECT AVG("concacaf") FROM "most_appearances" WHERE "merconorte">0 AND "player"='jared borgetti' AND "superliga">0;