Get WordPres pages from database in menu order

WP-page_order.sql

SELECT 
a.post_title title, 
a.post_content content
FROM
(SELECT
    m.post_title, 
    m.post_content,
    m.ID,
    m.post_parent, 
    m.menu_order as self_order, 
    p.menu_order as parent_order,
    g.menu_order as gp_order,
    case 
        WHEN m.post_parent = 0 THEN m.menu_order * 100
        ELSE case
			when g.menu_order is null then m.menu_order * 10 + p.menu_order * 100
            else m.menu_order + p.menu_order * 10 + g.menu_order* 100
		end
    END AS parentId
FROM
    wp_posts m
    LEFT JOIN wp_posts p
    ON m.post_parent = p.ID
    left join wp_posts g
    on p.post_parent = g.ID
where m.post_type = 'page' and m.post_status = 'publish'
ORDER BY parentId) a