如何在查询中使用联接从多个子查询

Question

SELECT dates, 
      SUM(Total_Likes) AS Total_likes, 
      SUM(Real_Like) AS Real_Like, 
      SUM(Secret_like) AS Secret_like 
    FROM 
    (
    SELECT CAST(added_datetime AS DATE) AS dates, 
      SUM(IF(like_flag=1,1,-1)) AS Total_Likes, 

     ( 
      SELECT SUM(IF(like_flag=1,1,-1)) 
      FROM like_message_audit_log la 
      WHERE user_profile_type=1 AND CAST(added_datetime AS DATE)= '2017-07-21' 
      AND like_mode IN(1,2) 
      GROUP BY user_profile_id_fk 
      ) AS Real_Like, 
      (

      SELECT SUM(IF(like_flag=1,1,-1)) 
      FROM like_message_audit_log la 
      WHERE user_profile_type=2 AND CAST(added_datetime AS DATE)= '2017-07-21' 
      AND like_mode IN(1,2) 
      GROUP BY user_profile_id_fk 
      )AS Secret_like 

     FROM like_message_audit_log la 
     WHERE CAST(added_datetime AS DATE)= '2017-07-21' 
     AND like_mode IN(1,2) 
    )AS t 
    GROUP BY dates; 

上面的查询只运行了一个日期获取数据，但我想两个日期 之间运行的日期范围如何编写查询请建议

像上述查询的输出是： 日期TOTAL_LIKES Real_Like Secret_like 2017年7月21日16 15 1

我重写上述查询等：

 SELECT dates, 
    SUM(Total_Likes) AS Total_likes, 
    SUM(real_likes_count) AS Real_Like, 
    SUM(secret_likes_count) AS Secret_like 
    FROM 
    (
    SELECT 
     CAST(added_datetime AS DATE) AS Dates, 
     like_mode AS modes, 
     COUNT(CASE WHEN like_flag=1 THEN 1 END) AS Total_Likes, 
     COUNT(CASE WHEN like_flag=1 AND user_profile_type=1 THEN 1 END) AS real_likes_count, 
     COUNT(CASE WHEN like_flag=1 AND user_profile_type=2 THEN 1 END) AS secret_likes_count 
    FROM like_message_audit_log la 
    WHERE added_datetime IN 
      ( SELECT MAX(lb.added_datetime) AS added_datetime 
       FROM like_message_audit_log lb 
       WHERE la.user_profile_id_fk=la.user_profile_id_fk AND lb.message_unique_id_fk=la.message_unique_id_fk 
       GROUP BY user_profile_id_fk, message_unique_id_fk 
      ) 
    GROUP BY CAST(added_datetime AS DATE) 


    )AS t 

    WHERE dates BETWEEN '2017-07-21' AND '2017-08-04' 
     AND modes IN(1,2) 
    GROUP BY Dates 
    ORDER BY Dates DESC; 

此查询工作，但花太多时间 我可以优化上面的查询

Answer 1

https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#operator_between

SELECT dates, 
      SUM(Total_Likes) AS Total_likes, 
      SUM(Real_Like) AS Real_Like, 
      SUM(Secret_like) AS Secret_like 
    FROM 
    (
    SELECT CAST(added_datetime AS DATE) AS dates, 
      SUM(IF(like_flag=1,1,-1)) AS Total_Likes, 

     ( 
      SELECT SUM(IF(like_flag=1,1,-1)) 
      FROM like_message_audit_log la 
      WHERE user_profile_type=1 AND CAST(added_datetime AS DATE) BETWEEN '2017-07-21' AND '2017-07-27' 
      AND like_mode IN(1,2) 
      GROUP BY user_profile_id_fk 
      ) AS Real_Like, 
      (

      SELECT SUM(IF(like_flag=1,1,-1)) 
      FROM like_message_audit_log la 
      WHERE user_profile_type=2 AND CAST(added_datetime AS DATE) BETWEEN '2017-07-21' AND '2017-07-27' 
      AND like_mode IN(1,2) 
      GROUP BY user_profile_id_fk 
      )AS Secret_like 

     FROM like_message_audit_log la 
     WHERE CAST(added_datetime AS DATE) BETWEEN '2017-07-21' AND '2017-07-27' 
     AND like_mode IN(1,2) 
    )AS t 
    GROUP BY dates; 

Answer 2

SELECT added_datetime,user_profile_id_fk, 
SUM(CASE WHEN user_profile_type=1 THEN 1 ELSE 0 END) AS Real_Like, 
SUM(CASE WHEN user_profile_type=2 THEN 1 ELSE 0 END) AS Secret_like, 
SUM(1) AS Total_likes 
FROM like_message_audit_log la 
WHERE CAST(added_datetime AS DATE) BETWEEN '2016-07-21' AND '2018-07-21' 
AND like_mode IN(1,2) 
GROUP BY user_profile_id_fk,added_datetime 

您可以检查此Fiddle Demo

你可以试试上面的查询。我认为这是优化的方式。