Custom queries with @Query

Which of the following methods, correctly provide pagination?

    @Query(value = "SELECT * FROM purchases WHERE transaction_year >= :year",
    countQuery = "SELECT COUNT(*) FROM purchases",
    nativeQuery=true)
    Page<Purchase> findByYear(int year, Pageable page);

    @Query("SELECT p FROM Purchase p OFFSET :page")
    Page<Purchase> findAll(Pageable page);

    @Query("SELECT p FROM Purchase p WHERE p.storeName = :storeName")
    Page<Purchase> findByStoreName(String storeName, Pageable page);

    @Query(value = "SELECT * FROM purchases WHERE company = :company"
    + " LIMIT :size OFFSET :page * :size", 
    nativeQuery=true)
    List<Purchase> findByCompany(String company, int size, int page);

    @Query(value = "SELECT * FROM purchases WHERE orderId = :orderId",
    countQuery = "SELECT COUNT(*) FROM purchases WHERE orderId = :orderId",
    nativeQuery=true
    )
    Page<Purchase> findByOrderId(long orderId, Pageable page);