ORACLE SQL-联接表

Question

根据所提供的ERD /图表，我在连接表方面需要帮助。我确实从一点开始做起，但是加入其他表格时遇到了问题。 这是我到目前为止所做的

SELECT first_name, last_name, username, post_title, comment_content
FROM profile_info p
JOIN club_member cm ON p.member_username = cm.username
JOIN blog_post bp ON cm.username = bp.member_username
JOIN post_comment pc ON bp.post_id = pc.post_id;

我想加入POST_PROP，TAG_MEMBER_W_INTEREST和INTEREST。但是我对如何做到这一点感到很困惑。请有人帮忙。下图是这样的：

此外，很抱歉，我无法发布链接以外的其他链接，因为我没有声望点。如果有人可以编辑此ID，请感激。谢谢。

更新：我能够加入5个表，现在剩下两个表POST_PROP和POST_COMMENT

--Profile info -> Club member -> Blog post -> TAG MEMBER INTEREST->INTEREST 
SELECT first_name, last_name, username, post_title,interest_tag
FROM profile_info p
JOIN club_member cm ON p.member_username = cm.username
JOIN blog_post bp ON cm.username = bp.member_username
JOIN tag_member_w_interest tg ON cm.username= tg.member_username
JOIN interest i ON tg.interest_id = i.interest_id;

Answer 1

似乎您需要添加

JOIN post_comment pc ON pc.member_username = cm.username
JOIN post_prop pp ON pp.member_username = cm.username

并通过绑定member_username表的club_member列获得以下SQL select语句

SELECT first_name, last_name, username, post_title, interest_tag
  FROM profile_info p
  JOIN club_member cm ON p.member_username = cm.username
  JOIN blog_post bp  ON cm.username = bp.member_username
  JOIN tag_member_w_interest tg  ON cm.username = tg.member_username
  JOIN interest i ON tg.interest_id = i.interest_id
  JOIN post_comment pc ON pc.member_username = cm.username
  JOIN post_prop pp ON pp.member_username = cm.username;