我正在使用此查询从mysql获取数据。可以改进吗？每个查询大约需要0.2秒......
我发现了一些其他方式，例如左连接但我无法通过一个查询获取所有数据。
或者我是否需要使用两个查询？
选择p.id，p.post_date，p.post_content，p.post_title，p.post_name，p.guid
for loop - ＆gt; likes_count，dislikes_count，post_views_count，rate where post_id = p.id？
SELECT p.id, p.post_date, p.post_content, p.post_title, p.post_name, p.guid,
(SELECT guid FROM wp_posts WHERE id = (SELECT meta_value FROM wp_postmeta WHERE post_id = p.id AND meta_key = "_thumbnail_id")) AS thumbnail_url,
(SELECT GROUP_CONCAT(DISTINCT term_taxonomy_id) FROM wp_term_relationships WHERE object_id = p.id) AS term_taxonomy_id,
(SELECT meta_value FROM wp_postmeta WHERE post_id = p.id AND meta_key = "likes_count" LIMIT 1) AS likes_count,
(SELECT meta_value FROM wp_postmeta WHERE post_id = p.id AND meta_key = "dislikes_count" LIMIT 1) AS dislikes_count,
(SELECT meta_value FROM wp_postmeta WHERE post_id = p.id AND meta_key = "post_views_count" LIMIT 1) AS post_views_count,
(SELECT meta_value FROM wp_postmeta WHERE post_id = p.id AND meta_key = "rate" LIMIT 1) AS rate
FROM wp_posts AS p INNER JOIN wp_term_relationships AS t ON p.id = t.object_id
WHERE p.post_status="publish"
AND p.ping_status="open"
AND t.term_taxonomy_id = ? GROUP BY p.id LIMIT ?,?
[EDIT-1] [表格结构] 1
[EDIT-2] 输出
{"id":11111,"post_date":"2016-01-02T05:46:58.000Z","post_content":"contenttttttt","post_title":"titleeeee","post_name":"postname","guid":"1255322","thumbnail_url":"thumb1957.jpg","term_taxonomy_id":"7","likes_count":"1","dislikes_count":"1","post_views_count":"538","rate":"50"}