Php MySQL-查询未读消息和邮件消息

我需要检索一个查询中的消息，其中包含用户名和未读消息数。正在使用的查询如下所示，将检索用户名和剩余内容以获取未读邮件的计数。如何将未读邮件从EMAIL_MESSAGE（MESSAGE_STATUS='U'）获取到此查询，以便我能够获得信息和其他详细信息

SELECT e.MAIL_NO, e.BIZ_ID, e.FROM_ADD, e.TO_ADD, e.EMAIL_SUBJECT,  
      DATE_FORMAT(e.UPDATED_DATE,'%d %b %y, %I:%i %p') AS DATE, e.MAIL_STATUS, 
      CONCAT(ufrom.USER_FIRST_NAME,' ',ufrom.USER_LAST_NAME) AS U_NAME FROM EMAIL e  
LEFT JOIN USER_CONFIG ufrom
     ON ufrom.USER_ID = e.FROM_ADD 
LEFT JOIN USER_CONFIG uto
     ON uto.USER_ID = e.TO_ADD
WHERE 
     e.FROM_ADD=: e.FROM_ADD  
ORDER BY MAX(e.UPDATED_DATE) DESC, ufrom.USER_FIRST_NAME DESC 
LIMIT 0, 10 

桌子

CREATE TABLE IF NOT EXISTS USER_CONFIG(
  USER_ID INT UNSIGNED NOT NULL,
  USER_FIRST_NAME VARCHAR(100) CHARACTER SET 'utf8' COLLATE 'utf8_unicode_ci' NOT NULL, 
  USER_LAST_NAME VARCHAR(100) CHARACTER SET 'utf8' COLLATE 'utf8_unicode_ci' NOT NULL, 
  PRIMARY KEY (USER_ID),
  INDEX idx_USER_CONFIG_id1 (USER_ID ASC)
)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_unicode_ci;

CREATE TABLE IF NOT EXISTS EMAIL (
 MAIL_NO INT UNSIGNED NOT NULL, 
 BIZ_ID VARCHAR(35) CHARACTER SET 'latin1' COLLATE 'latin1_bin' NOT NULL, 
 FROM_ADD INT UNSIGNED NOT NULL,  -- FOR EMAIL_TYPE EUCP, THIS WILL BE AGENT ID
 TO_ADD INT UNSIGNED DEFAULT NULL, -- FOR EMAIL_TYPE EUCP, THIS WILL BE CANDIDATE_ID
 EMAIL_SUBJECT VARCHAR(75) CHARACTER SET 'utf8' COLLATE 'utf8_unicode_ci' DEFAULT NULL, 
 MAIL_STATUS CHAR(1) CHARACTER SET 'latin1' COLLATE 'latin1_bin' DEFAULT 'A', 
 UPDATED_DATE DATETIME ON UPDATE CURRENT_TIMESTAMP,
 PRIMARY KEY (MAIL_NO,BIZ_ID),
 INDEX idx_EMAIL_id1 (FROM_ADD ASC),
 INDEX idx_EMAIL_id2 (TO_ADD ASC),
 INDEX idx_EMAIL_id3 (BIZ_ID ASC),
 INDEX idx_EMAIL_id4 (MAIL_STATUS ASC),
 INDEX idx_EMAIL_id5 (EMAIL_SUBJECT ASC), 
 INDEX idx_EMAIL_id6 (UPDATED_DATE ASC)  
)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_unicode_ci;

如果我必须自己查询表，我会使用

SELECT COUNT(*) AS UNREAD_MESSAGE_COUNT FROM EMAIL_MESSAGE 
  WHERE BIZ_ID= :BIZID AND MESSAGE_STATUS = 'U';

但是，我很难合并到上面给出的组合查询中。你能帮我吗

---

收到的持续电子邮件和未读（已收到）的计数

已发送的电子邮件和未读已发送邮件的计数：

  SELECT e.MAIL_NO, e.BIZ_ID, e.FROM_ADD, e.TO_ADD, e.EMAIL_SUBJECT,  
  DATE_FORMAT(e.UPDATED_DATE,'%d %b %y, %I:%i %p') AS DATE, e.MAIL_STATUS, 
  CONCAT(ufrom.USER_FIRST_NAME,' ',ufrom.USER_LAST_NAME) AS U_NAME,if(UNREAD_MESSAGE_COUNT is null,0,UNREAD_MESSAGE_COUNT) FROM EMAIL e  
LEFT JOIN USER_CONFIG ufrom
 ON ufrom.USER_ID = e.FROM_ADD 
left join (SELECT COUNT(*) AS UNREAD_MESSAGE_COUNT,FROM_ADD FROM EMAIL_MESSAGE         inner join EMAIL using (BIZ_ID)
WHERE MESSAGE_STATUS = 'U' group by FROM_ADD) t on t.FROM_ADD= e.FROM_ADD
WHERE 
 e.FROM_ADD=:FROM_ADD
ORDER BY MAX(e.UPDATED_DATE) DESC, ufrom.USER_FIRST_NAME DESC 
LIMIT 0, 10 

编辑：-如果count=null为0，则添加，并添加左连接以确保显示结果

编辑2：将子查询更改为仅统计发送到此用户的未读数据

---

编辑3：根据所需结果更新第一个查询并添加第二个查询。这应该能奏效。您可能想要第一封。

如果邮件状态为“其他”，则此查询无法返回数据，即“U”表示邮件已阅读……对不起，我的意思是如果用户2发送了3封邮件，然后查询返回finds unread message as 3，用户2也是如此。哪个字段将Email_message表链接到Email表-biz_id？您在我第二次编辑后尝试过吗？在我的表中没有更多数据的情况下，很难准确地在我的端进行测试。编辑的查询还考虑（在计数中）用户发送的消息。

  SELECT e.MAIL_NO, e.BIZ_ID, e.FROM_ADD, e.TO_ADD, e.EMAIL_SUBJECT,  
  DATE_FORMAT(e.UPDATED_DATE,'%d %b %y, %I:%i %p') AS DATE, e.MAIL_STATUS, 
  CONCAT(ufrom.USER_FIRST_NAME,' ',ufrom.USER_LAST_NAME) AS U_NAME,if(UNREAD_MESSAGE_COUNT is null,0,UNREAD_MESSAGE_COUNT) FROM EMAIL e  
LEFT JOIN USER_CONFIG ufrom
 ON ufrom.USER_ID = e.TO_ADD
left join (SELECT COUNT(*) AS UNREAD_MESSAGE_COUNT,TO_ADD FROM EMAIL_MESSAGE         inner join EMAIL using (BIZ_ID)
WHERE MESSAGE_STATUS = 'U' group by TO_ADD) t on t.TO_ADD= e.TO_ADD
WHERE 
 e.TO_ADD=:TO_ADD
ORDER BY MAX(e.UPDATED_DATE) DESC, ufrom.USER_FIRST_NAME DESC 
LIMIT 0, 10 

  SELECT e.MAIL_NO, e.BIZ_ID, e.FROM_ADD, e.TO_ADD, e.EMAIL_SUBJECT,  
  DATE_FORMAT(e.UPDATED_DATE,'%d %b %y, %I:%i %p') AS DATE, e.MAIL_STATUS, 
  CONCAT(ufrom.USER_FIRST_NAME,' ',ufrom.USER_LAST_NAME) AS U_NAME,if(UNREAD_MESSAGE_COUNT is null,0,UNREAD_MESSAGE_COUNT) FROM EMAIL e  
LEFT JOIN USER_CONFIG ufrom
 ON ufrom.USER_ID = e.FROM_ADD 
left join (SELECT COUNT(*) AS UNREAD_MESSAGE_COUNT,FROM_ADD FROM EMAIL_MESSAGE         inner join EMAIL using (BIZ_ID)
WHERE MESSAGE_STATUS = 'U' group by FROM_ADD) t on t.FROM_ADD= e.FROM_ADD
WHERE 
 e.FROM_ADD=:FROM_ADD
ORDER BY MAX(e.UPDATED_DATE) DESC, ufrom.USER_FIRST_NAME DESC 
LIMIT 0, 10