如何获取标签，wordpress中帖子的类别？

Question

I am trying to get categories, tags in single row result, My post have multiple categories and tags, so I am getting a result from query in multiple rows. 

是否有任何方法可以将结果单行显示。如果我得到的结果是用'，'分隔的标签和类别，则可以。

Here is my sql query with slug 'onsite-training'. I want to get tags as well.i don't know how to use group_concat, can anybody help me?

    SELECT wt.name, p.post_title, p.id 
    FROM wp_terms wt
    INNER JOIN wp_term_taxonomy wtt ON wt.term_id = wtt.term_id
    INNER JOIN wp_term_relationships wtr ON wtt.term_taxonomy_id = 
    wtr.term_taxonomy_id
    INNER JOIN wp_posts p ON wtr.object_id = p.ID
    WHERE p.post_type = 'sfwd-courses' AND wt.slug ='onsite-training' 
    AND p.post_status = 'publish'