1
我有一些連接,我正在檢索與一段內容相關的「標籤」。 我得到我的標籤袋很好,但它們每個都重複6-7次。JOIN顯示重複的結果? :/
SELECT
users.userName,
usersProfiles.avatarUrl,
usersProfiles.gender,
GROUP_CONCAT(contentComments.message SEPARATOR ', ') AS comments,
c.*,
GROUP_CONCAT(tagWords.tagWord SEPARATOR ', ') AS tags,
(SELECT COUNT(contentId) FROM platform.contentLikes WHERE contentId = 1213) as feedBackLikes
FROM platform.contents c
INNER JOIN platform.users ON users.userId = c.userId
INNER JOIN platform.usersProfiles ON usersProfiles.userId = c.userId
INNER JOIN platform.contentTags ON contentTags.contentId = c.contentId
INNER JOIN platform.tagWords ON contentTags.tagId = tagWords.tagId
INNER JOIN platform.contentComments ON contentComments.contentId = c.contentId
WHERE c.contentTitle = :contentTitle AND c.userId = :userId
任何有關爲什麼發生這種情況的提示或建議,如果它是錯誤的,我將如何正確地做到這一點?
謝謝!
大概忘了團體。 – 2010-12-16 18:37:39