CREATE TABLE table_name_77 (pages INT, isbn VARCHAR)

I want the average pages for ISBN of 978-0-9766580-5-4
SELECT AVG(pages) FROM table_name_77 WHERE isbn = "978-0-9766580-5-4"
SELECT AVG("pages") FROM "table_name_77" WHERE "978-0-9766580-5-4" = "isbn"