我想知道你们中的任何人是否可以提供帮助，因为我已经坚持了好几天了。
这是我第一次尝试编写这种规模的查询。
我正在创建一个社交网络，并正在查询活动提要，该提要显示人们何时喜欢某事、评论某事等。除了有人回复某个状态之外，我所有的一切都在工作。
我想要做的是将相关评论附加到相关状态，这有点工作，但它显示原始状态的重复条目。请看下面的查询
SELECT
d1.d_id AS d1_d_id, d1.profile_picture AS d1_profile_picture, d1.username AS d1_username, d1.forename AS d1_forename, d1.surname AS d1_surname,
d2.d_id AS d2_d_id, d2.profile_picture AS d2_profile_picture, d2.username AS d2_username, d2.forename AS d2_forename, d2.surname AS d2_surname,
d3.d_id AS d3_d_id, d3.profile_picture AS d3_profile_picture, d3.username AS d3_username, d3.forename AS d3_forename, d3.surname AS d3_surname,
d4.d_id AS d4_d_id, d4.profile_picture AS d4_profile_picture, d4.username AS d4_username, d4.forename AS d4_forename, d4.surname AS d4_surname,
a.ra_id AS ra_id, a.r_id AS r_id, a.comment AS a_comment, a.type AS a_type, a.status AS status, a.date_posted AS date_posted,
ar.r_id AS ar_r_id, ar.comment AS ar_comment, ar.type AS ar_type, ar.status AS ar_status, ar.date_posted AS ar_date_posted,
c.slug AS cat_slug,
p.p_id AS p_id, p.title AS title, p.slug AS slug,
m.media_path AS p_media_path,
m1.i_id AS m1_i_id, m1.media_path AS m1_media_path,
m2.i_id AS m2_i_id, m2.media_path AS m2_media_path,
m3.i_id AS m3_i_id, m3.media_path AS m3_media_path,
m4.i_id AS m4_i_id, m4.media_path AS m4_media_path
FROM activity AS a
INNER JOIN designers AS d1 ON d1.d_id = a.d_id
LEFT JOIN media AS m1 ON m1.i_id = d1.profile_picture
LEFT JOIN projects AS p ON p.p_id = a.r_id
LEFT JOIN media AS m ON m.i_id = p.image
LEFT JOIN categories AS c ON c.c_id = p.c_id
LEFT JOIN designers AS d2 ON d2.d_id = p.d_id
LEFT JOIN media AS m2 ON m2.i_id = d2.profile_picture
LEFT OUTER JOIN designers AS d3 ON d3.d_id = a.t_id
LEFT JOIN media AS m3 ON m3.i_id = d3.profile_picture
LEFT JOIN activity AS ar ON ar.r_id = a.ra_id
LEFT JOIN designers AS d4 ON d4.d_id = ar.d_id
LEFT JOIN media AS m4 ON m4.i_id = d4.d_id
WHERE a.status != 1 AND a.type != 'Follow'
UNION
SELECT
d1.d_id AS d1_d_id, d1.profile_picture AS d1_profile_picture, d1.username AS d1_username, d1.forename AS d1_forename, d1.surname AS d1_surname,
d2.d_id AS d2_d_id, d2.profile_picture AS d2_profile_picture, d2.username AS d2_username, d2.forename AS d2_forename, d2.surname AS d2_surname,
d3.d_id AS d3_d_id, d3.profile_picture AS d3_profile_picture, d3.username AS d3_username, d3.forename AS d3_forename, d3.surname AS d3_surname,
d4.d_id AS d4_d_id, d4.profile_picture AS d4_profile_picture, d4.username AS d4_username, d4.forename AS d4_forename, d4.surname AS d4_surname,
a.ra_id AS ra_id, a.r_id AS r_id, a.comment AS a_comment, a.type AS a_type, a.status AS status, a.date_posted AS date_posted,
ar.r_id AS ar_r_id, ar.comment AS ar_comment, ar.type AS ar_type, ar.status AS ar_status, ar.date_posted AS ar_date_posted,
c.slug AS cat_slug,
p.p_id AS p_id, p.title AS title, p.slug AS slug,
m.media_path AS p_media_path,
m1.i_id AS m1_i_id, m1.media_path AS m1_media_path,
m2.i_id AS m2_i_id, m2.media_path AS m2_media_path,
m3.i_id AS m3_i_id, m3.media_path AS m3_media_path,
m4.i_id AS m4_i_id, m4.media_path AS m4_media_path
FROM activity AS a
INNER JOIN designers AS d1 ON d1.d_id = a.d_id
LEFT JOIN media AS m1 ON m1.i_id = d1.profile_picture
LEFT JOIN projects AS p ON p.p_id = a.r_id
LEFT JOIN media AS m ON m.i_id = p.image
LEFT JOIN categories AS c ON c.c_id = p.c_id
LEFT JOIN designers AS d2 ON d2.d_id = a.r_id
LEFT JOIN media AS m2 ON m2.i_id = d2.profile_picture
LEFT OUTER JOIN designers AS d3 ON d3.d_id = a.t_id
LEFT JOIN media AS m3 ON m3.i_id = d3.profile_picture
LEFT JOIN activity AS ar ON ar.r_id = a.ra_id
LEFT JOIN designers AS d4 ON d4.d_id = ar.d_id
LEFT JOIN media AS m4 ON m4.i_id = d4.d_id
WHERE a.status != 1 AND a.type = 'Follow'
ORDER BY date_posted DESC
我已经尝试按照表格评论 id 进行分组，但因此只在提要中显示状态和一条评论。
我正在使用一个名为 activity 的表，然后有一个名为 type 的列，其中将包含诸如“状态”、“状态回复”、“喜欢”等条目，并有一个名为 r_id 的列（不是唯一 ID），当您回复时此处输入原始状态的唯一 ID 的状态。
如果我遗漏了什么或需要更好地解释，请告诉我。
干杯，丹