带有特色图片和类别的WordPress帖子

Question

我正在寻找以下解决方案：

SELECT ID
     , post_date_gmt
     , post_content
     , post_title
     , post_modified_gmt 
  FROM wphj_posts 
 WHERE post_status = 'publish'

和：

SELECT DISTINCT meta_value
              , post_id
              , meta_id
           FROM wphj_postmeta
          WHERE meta_key LIKE '_wp_attached_file'
          ORDER 
             BY meta_value ASC

我首先要做的是，它不起作用，因为我想要它：

SELECT ID
     , post_date_gmt
     , post_content
     , post_title
     , post_modified_gmt
     , meta_value 
  FROM wphj_posts
     , wphj_postmeta 
 WHERE post_status = 'publish' 
   AND meta_key LIKE '_wp_attached_file'

我只是尝试查询WordPress数据库以从wp_posts获取帖子数据，并从wp_postmeta表中获取同一帖子的特色图片。

我尝试做的事情：使用union，unionall，join，inner join，left join。 不幸的是，它们不起作用。

更新，使用wpDatatables插件提出，可在插件仪表板上使用，但不能单独作为查询使用：\\-我在做错什么呢？

   SELECT posts_post.ID AS post_ID,
   posts_post.post_date_gmt AS post_post_date_gmt,
   posts_post.post_title AS post_post_title,
   CONCAT('<a href="',posts_post.guid,'">',posts_post.post_title,'</a>') AS post_title_with_link_to_post,
   posts_post.post_content AS post_post_content,
   posts_post.post_status AS post_post_status,
   posts_post.post_name AS post_post_name,
   CONCAT(
                                '<a href="',
                                posts_post.guid,
                                '"><img src="', 
                                REPLACE( 
                                    posts_post_img.guid,
                                    CONCAT(
                                        '.',
                                        SUBSTRING_INDEX(  
                                            posts_post_img.guid,
                                            '.',
                                            -1
                                        )
                                    ),
                                    CONCAT(
                                        '-150x150.' ,
                                        SUBSTRING_INDEX(  
                                            posts_post_img.guid,
                                            '.',
                                            -1
                                        )
                                    )
                                    ), 
                                '" /></a>'
                              ) AS post_thumbnail_with_link_to_post,
   post_taxonomy_category_tbl.name AS post_taxonomy_category
FROM wphj_posts AS posts_post
INNER JOIN (SELECT name, object_id as id FROM wphj_terms AS post_taxonomy_category_tbl_terms INNER JOIN wphj_term_taxonomy AS post_taxonomy_category_tbl_termtaxonomy ON post_taxonomy_category_tbl_termtaxonomy.term_id = post_taxonomy_category_tbl_terms.term_id  AND post_taxonomy_category_tbl_termtaxonomy.taxonomy = 'category' INNER JOIN wphj_term_relationships AS rel_post_taxonomy_category_tbl  ON post_taxonomy_category_tbl_termtaxonomy.term_taxonomy_id = rel_post_taxonomy_category_tbl.term_taxonomy_id) AS post_taxonomy_category_tbl
 ON post_taxonomy_category_tbl.ID = posts_post.id 
LEFT JOIN (SELECT posts_post_imgposts.guid AS guid, posts_post_imgpostmeta.post_id AS post_id
                                    FROM wphj_postmeta AS posts_post_imgpostmeta 
                                    INNER JOIN wphj_posts AS posts_post_imgposts 
                                        ON posts_post_imgpostmeta.meta_value = posts_post_imgposts.ID
                                    WHERE posts_post_imgpostmeta.meta_key = '_thumbnail_id' ) AS posts_post_img
 ON posts_post_img.post_id = posts_post.ID
WHERE 1=1 
AND posts_post.post_type = 'post'

Answer 1

您可以尝试使用此代码，我在本地安装程序上以sequal pro运行它，并且我认为它可以工作，因此我认为它可以工作。

SELECT ID,
  post_date_gmt,
  post_content,
  post_title,
  post_modified_gmt,
  meta_value
FROM wphj_posts, wphj_postmeta
WHERE wphj_posts.ID = wphj_postmeta.post_id
AND wphj_postmeta.meta_key = '_wp_attached_file'
AND wphj_posts.post_status = 'publish'