Mysql 显示图像_POST_ID ；以及基于MESSAGEID的POST\u IMG\u路径

我正在从多个表中提取数据，所有其他数据都已正确提取，但未根据用户消息的messageid显示POST\u图像的IMAGE\u POST\u ID POST\u IMG\u PATH字段

我的桌子是空的

1）后期图像

| IMAGE_ID |    SMALL_PIC_PATH |  LARGE_PIC_PATH |                        ADDDATE | VISIBILITY | USERID | MESSAGEID |
---------------------------------------------------------------------------------------------------------------------
|     i_i1 | /post/small/a.jpg | /post/img/a.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i2 | /post/small/b.jpg | /post/img/b.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i3 | /post/small/c.jpg | /post/img/c.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i4 | /post/small/d.jpg | /post/img/d.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i5 | /post/small/e.jpg | /post/img/e.jpg | January, 01 2012 00:00:00+0000 |     public |      3 |        m2 |
|     i_i6 | /post/small/f.jpg | /post/img/f.jpg | January, 01 2012 00:00:00+0000 |     public |      3 |        m2 |

| MESSAGEID |           MESSAGE |   ADDDATE | SENTBY | VISIBILITY | USERID |
----------------------------------------------------------------------------
|        m1 | Hello how are you | 23-2-2012 |      2 |     public |      1 |
|        m2 |            Hello  | 23-2-2012 |      3 |     public |      1 |
|        m3 |          Hiiiiiii | 23-2-2012 |      4 |     public |      1 |

2）用户信息

| IMAGE_ID |    SMALL_PIC_PATH |  LARGE_PIC_PATH |                        ADDDATE | VISIBILITY | USERID | MESSAGEID |
---------------------------------------------------------------------------------------------------------------------
|     i_i1 | /post/small/a.jpg | /post/img/a.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i2 | /post/small/b.jpg | /post/img/b.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i3 | /post/small/c.jpg | /post/img/c.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i4 | /post/small/d.jpg | /post/img/d.jpg | January, 01 2012 00:00:00+0000 |     public |      2 |        m1 |
|     i_i5 | /post/small/e.jpg | /post/img/e.jpg | January, 01 2012 00:00:00+0000 |     public |      3 |        m2 |
|     i_i6 | /post/small/f.jpg | /post/img/f.jpg | January, 01 2012 00:00:00+0000 |     public |      3 |        m2 |

| MESSAGEID |           MESSAGE |   ADDDATE | SENTBY | VISIBILITY | USERID |
----------------------------------------------------------------------------
|        m1 | Hello how are you | 23-2-2012 |      2 |     public |      1 |
|        m2 |            Hello  | 23-2-2012 |      3 |     public |      1 |
|        m3 |          Hiiiiiii | 23-2-2012 |      4 |     public |      1 |

我想获取相关消息id的所有图像id和小图片路径。 但在我的查询中，它显示了所有带有messageid的image\u id small\u pic\u路径

这是我的问题

SELECT user_messages.messageid,user_messages.message,
user_messages.sentby,user_messages.visibility,


(
   SELECT GROUP_CONCAT(  `post_images`.`image_id` SEPARATOR ';')
    FROM  `post_images`
    JOIN user_messages
  ON `post_images`.`messageid` =user_messages.messageid
) AS  `Image_post_id`,
(
   SELECT GROUP_CONCAT(  `post_images`.`small_pic_path` SEPARATOR ';')
    FROM  `post_images`
    JOIN user_messages
  ON `post_images`.`messageid` =user_messages.messageid
) AS Post_Img_path,
(
  SELECT count(*) FROM likes
  WHERE element_id=user_messages.messageid
  )AS Total_Likes
, smsusers.fname as Msg_sender_fname,
smsusers.lname as Msg_sender_lname,
profile_pic.small_pic_path as Msg_sender_pic

FROM user_messages
      INNER JOIN smsusers ON
        user_messages.SENTBY = smsusers.id
 INNER JOIN profile_pic ON
 user_messages.SENTBY = profile_pic.userid
WHERE user_messages.userid='1';

---

这是我的

我得到了答案。这里我没有使用

分组方式

我不完全理解你的问题。

post_图像

和

user_消息

表之间似乎没有关系。你们能把你们想要的写出来作为输出吗？MESSAGEID是Post_images表中的外键。用户消息中的一条消息可以有多个Post图像条目请查看SQLFIDLE中唯一的

MESSAGEID

外键处于删除状态，而不是创建状态。是否确定已正确创建表？不知道是否可以更正表