獲取在PHP

所有標籤我有一個類似的表結構，是這個問題，接受的答案：Recommended SQL database design for tags or tagging 獲取在PHP

除礦

thread, thread_tags and tags

使用我可以得到一個標籤與各個線程關聯的下列SQL命令，我如何獲得與每個線程關聯的所有標籤？

SELECT 
    thread.id AS t_id, 
    thread.title, 
    thread.content, 
    author.username, 
    author.id AS a_id 
FROM thread 
INNER JOIN author 
    ON author_id = author.id 
INNER JOIN thread_tags 
    ON thread_id = thread.id 
INNER JOIN tags 
    ON tag_id = tags.id  
ORDER BY thread.created DESC

來源

2011-01-06 user565031

Post：http://stackoverflow.com/questions/4612353/inner-joins-in-php ??? ??? – Chandu 2011-01-06 07:18:53

什麼是`author_id`？你應該把表名放在任何地方，或者更好的是縮短名字（例如`TH從線程TH INNER JOIN作者A上TH.author_id = A.id` – 2011-01-06 07:23:53

我覺得你的加入看起來很好，但你的arent要選擇從tags表，除非你把它有什麼！ T.*以下

SELECT TH.id, TH.title, TH.content, A.username, A.id, T.*     
FROM thread TH 
INNER JOIN author A ON TH.author_id = A.id 
INNER JOIN thread_tags TT ON TT.thread_id = TH.id 
INNER JOIN tags T ON TT.tag_id = T.id 
ORDER BY TH.created DESC

來源

2011-01-06 07:28:54

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