Question

我有一个WordPress数据库，我需要使用纯MySQL进行查询，以选择来自名为“guide_category”的自定义分类的所有帖子。我还希望按wp_terms.name按wp_posts.name的顺序排序结果。帖子可以位于多个类别中。

因此结果应该类似于：

Category_A
    Post A
    Post B
    Post C
Category_B
    Post A
    Post B
    Post C
Category_C
    Post A
    Post B
    Post C

Answer 1

global $wpdb;
$query = "
SELECT * FROM $wpdb->posts
LEFT JOIN $wpdb->term_relationships ON
($wpdb->posts.ID = $wpdb->term_relationships.object_id)
LEFT JOIN $wpdb->term_taxonomy ON
($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)
WHERE $wpdb->posts.post_status = 'publish'
AND $wpdb->term_taxonomy.taxonomy = 'category'
AND $wpdb->term_taxonomy.term_id = 1
ORDER BY post_date DESC
";

$results = $wpdb->get_results($query);

用您的texonomy id替换term_taxonomy.term_id = 1 它可能适合你

Answer 2

最终为我工作的是：

SELECT name, post_title
FROM wp_term_taxonomy AS cat_term_taxonomy
INNER JOIN wp_terms AS cat_terms ON cat_term_taxonomy.term_id = cat_terms.term_id
INNER JOIN wp_term_relationships AS cat_term_relationships ON cat_term_taxonomy.term_taxonomy_id = cat_term_relationships.term_taxonomy_id
INNER JOIN wp_posts AS cat_posts ON cat_term_relationships.object_id = cat_posts.ID
INNER JOIN wp_postmeta AS meta ON cat_posts.ID = meta.post_id
WHERE cat_posts.post_status =  'publish'
AND cat_term_taxonomy.taxonomy =  'guide_category'
GROUP BY name, post_title
ORDER BY name, post_title

Answer 3

在查看/wp-includes/taxonomy.php中的WP_Tax_Query类时，我发现有一个'include_children'选项，默认为true。我用以下内容修改了我原来的get_posts（）调用，效果很好：

$pages = get_posts(array(
  'post_type' => 'post'
  'tax_query' => array(
    array(
      'taxonomy' => 'taxonomy-name'
    )
  )
));

更多查询参数列表：http://codex.wordpress.org/Class_Reference/WP_Query#Taxonomy_Parameters

如何查询自定义WordPress类别中的所有帖子

3 个答案: