I want the average pages for  ISBN of 978-0-9766580-5-4
CREATE TABLE "publications" (
  "title" text,
  "year" real,
  "isbn" text,
  "volume" text,
  "strips" text,
  "pages" real,
  "colors" text
);
SELECT AVG("pages") FROM "publications" WHERE "isbn"='978-0-9766580-5-4';