以下是重构后的内容： SELECT dw_posts.ID, dw_posts.post_title, dw_posts.post_content FROM dw_posts INNER JOIN dw_term_relationships ON (dw_posts.ID = dw_term_relationships.object_id) WHERE 1=1 AND dw_term_relationships.term_taxonomy_id = 5 AND dw_posts.post_type = ‘post’ AND dw_posts.post_status = ‘publish’ GROUP BY dw_posts.ID ORDER BY RAND() LIMIT 0, 6