Php 身份证` Table : og_ratings notification_date pacra_action pacra_outlook pacra_lterm pacra_sterm alter table og_ratings add index

身份证`

Table : og_ratings

notification_date
pacra_action
pacra_outlook
pacra_lterm
pacra_sterm

alter table og_ratings 
add index idx_pacra_action(pacra_action), 
add index idx_pacra_outlook(pacra_outlook), 
add index idx_pacra_lterm(pacra_lterm), 
add index idx_pacra_sterm(pacra_sterm);

SELECT r.client_id,c.id,t.id,a.id,o.id,c.name AS opinion, r.notification_date, t.title AS ttitle,a.title AS atitle,o.title AS otitle, l.title AS ltitle, s.title AS stitle, r.opinion_id, pc.id, r.pr_client_id AS pr_client, pc.address, pc.liaison_one, city.id, pc.head_office_id, city.city, pc.title AS cname 
FROM (SELECT a.client_id, a.notification_date, a.rating_type_id, a.pacra_action, a.pacra_outlook, a.pacra_lterm, a.pacra_sterm, a.opinion_id, a.pr_client_id 
FROM (SELECT t.client_id, t.notification_date, t.rating_type_id, t.pacra_action, t.pacra_outlook, t.pacra_lterm, t.pacra_sterm, pr.opinion_id, pr.client_id AS pr_client_id, 
               CASE 
                 WHEN @category != t.client_id THEN @rownum := 1 
                 ELSE @rownum := @rownum + 1 
               END AS rank,
               @category := t.client_id AS var_category
          FROM og_ratings t
          JOIN pacra_client_opinion_relations pr ON pr.opinion_id = r.client_id 
          JOIN (SELECT @rownum := NULL, @category := '') r 
          WHERE pr.client_id = 50
          ORDER BY t.client_id,t.notification_date DESC) a
      WHERE x.rank=2) r 
LEFT JOIN og_companies c ON r.client_id = c.id 
LEFT JOIN og_rating_types t ON r.rating_type_id = t.id 
LEFT JOIN og_actions a ON r.pacra_action = a.id 
LEFT JOIN og_outlooks o ON r.pacra_outlook = o.id 
LEFT JOIN og_lterms l ON r.pacra_lterm = l.id 
LEFT JOIN og_sterms s ON r.pacra_sterm = s.id 
LEFT JOIN pacra_clients pc ON pc.id = r.pr_client_id 
LEFT JOIN city ON city.id = pc.head_office_id 

  LEFT JOIN og_companies c ON r.client_id = c.id
  LEFT JOIN og_rating_types t ON r.rating_type_id = t.id
  LEFT JOIN og_actions a ON r.pacra_action = a.id
  LEFT JOIN og_outlooks o ON r.pacra_outlook = o.id
  LEFT JOIN og_lterms l ON r.pacra_lterm = l.id
  LEFT JOIN og_sterms s ON r.pacra_sterm = s.id
  LEFT JOIN pacra_client_opinion_relations pr ON pr.opinion_id = c.id
  LEFT JOIN pacra_clients pc ON pc.id = pr.client_id
  LEFT JOIN city ON city.id = pc.head_office_id

   WHERE
         r.client_id IN ( SELECT opinion_id 
                             FROM pacra_client_opinion_relations
                            WHERE client_id = 50 )

Opinion_ID    Client_ID   Other...
1             28          ...
2             35          ...
3             50          ...
4             2           ...
5             50          ...
6             6           ...
7             50          ...
8             4           ...

og_ratings (assuming this data is pre-sorted per client for sample purposes)
client_id  notification_date
13         Sep 5      <- You want THIS entry if it was client 13 included
13         Sep 14     <- Most recent for client 13
28         Sep 1
28         Sep 8
28         Sep 10     <- You want THIS entry if client 28 included
28         Sep 11     <- Most recent for client 28
29         Sep 4      <- You want THIS entry if client 29 included
29         Sep 11     <- Most recent for client 29
43         Sep 16     <- Most recent for client 43 and no prior, 
                         this would never show as only one entry for client
50         Sep 2
50         Sep 9
50         Sep 12     <- You want THIS entry for client 50
50         Sep 15     <- Most recent for client 50

client_id  notification_date
13         Sep 5
28         Sep 10
29         Sep 4 
50         Sep 12

 og_ratings r INNER JOIN (
    SELECT 
      client_id, 
      max(notification_date) notification_2nd_date
   FROM 
      og_ratings
   WHERE
      (client_id, notification_date) 
         NOT IN ( SELECT client_id, max(notification_date)
                     FROM og_ratings 
                     GROUP BY client_id )
   GROUP BY 
      client_id
   ORDER BY
      client_id DESC

 og_ratings r INNER JOIN (
    SELECT 
      client_id, 
      max(notification_date) notification_2nd_date
   FROM 
      og_ratings
   WHERE
      client_id = 50    <--- ADDED TO WHERE CLAUSE for CLIENT 50 ONLY
      AND (client_id, notification_date) 
         NOT IN ( SELECT client_id, max(notification_date)
                     FROM og_ratings 
                     WHERE client_id = 50    <--- ADDED HERE TOO FOR CLIENT 50
                     GROUP BY client_id )
   GROUP BY 
      client_id
   ORDER BY
      client_id DESC

client_id  notification_date
50         Sep 12