mysql - Wordpress sql：获取帖子的所有类别

Question

我有一个帖子，它有多个类别，我如何通过 sql 查询获取该帖子的所有类别？非常感谢。

Answer 1

您可以使用以下 SQL 获取帖子类别：

SELECT wt.* FROM wp_posts p
 INNER JOIN wp_term_relationships r ON r.object_id=p.ID
 INNER JOIN wp_term_taxonomy t ON t.term_taxonomy_id = r.term_taxonomy_id
 INNER JOIN wp_terms wt on wt.term_id = t.term_id
WHERE p.ID=1 AND t.taxonomy="category"

Answer 2

检查此代码 -

$post_categories = wp_get_post_categories( $post_id );
$cats = array();

foreach($post_categories as $c){
    $cat = get_category( $c );
    $cats[] = array( 'name' => $cat->name, 'slug' => $cat->slug );
}

参考：http ://codex.wordpress.org/Function_Reference/wp_get_post_categories --

Answer 3

尝试

select c.*
from wp_categories c
inner join wp_post2cat pc on pc.category_id = c.cat_ID
inner join wp_posts p on pc.post_id = p.id
where p.id = 1