MYSQLは特集画像を取得し、タイトルを掲示します

Question

「おすすめ画像」のサムネイル版を取得したい これは私が持っているコードですが、大きな画像を引っ張っています。

SELECT a.post_title title, max(c.guid) img_url, a.ID id, a.post_name 
FROM wp_posts a  
LEFT JOIN 
    (select post_parent, max(post_date_gmt) as latest_image_date 
    from wp_posts 
    where post_type='attachment' 
    GROUP BY post_parent) b 
     on a.id=b.post_parent  
LEFT JOIN 
    wp_posts c 
    on c.post_parent=a.id 
    and c.post_type='attachment' 
    and b.latest_image_date = c.post_date_gmt 
WHERE c.guid IS NOT NULL  
GROUP BY a.post_title 
ORDER BY a.ID 

Answer 1

このクエリは私にとってはうまくいくかもしれません。

SELECT p1.*, wm2.meta_value 
FROM wp_posts p1 
LEFT JOIN 
    wp_postmeta wm1 ON (
     wm1.post_id = p1.id 
     AND wm1.meta_value IS NOT NULL 
     AND wm1.meta_key = '_thumbnail_id' 
    ) 
LEFT JOIN 
    wp_postmeta wm2 ON (
     wm1.meta_value = wm2.post_id 
     AND wm2.meta_key = '_wp_attached_file' 
     AND wm2.meta_value IS NOT NULL 
    ) 
LEFT JOIN 
    wp_term_relationships wtr ON (
     object_id=p1.id 
    ) 
WHERE 
    p1.post_status='publish' 
    AND p1.post_type='post' 
    AND `term_taxonomy_id`=? 
ORDER BY p1.post_date DESC 
LIMIT 0,10