Question

我真的不明白会发生什么。我有两个表reponses_vitesse和questions_vitesse，我尝试对它们进行内部联接。哦，当然我的桌子有很好的领域。但无论我尝试什么，我都会在下面看到1054错误......而ID行当然存在于我的表格中......

如果我写 SELECT ID，QUESTION.reponses_vitesse，....等...... 然后我得到了[Err] 1054 - 未知专栏＆＃39; QUESTION.reponses_vitesse＆＃39;在＆＃39;字段列表＆＃39;

我使用mysql 5.5.24

非常感谢任何帮助。

谢谢。

[SQL]

SELECT ID.reponses_vitesse, QUESTION.reponses_vitesse, REPONSE.reponses_vitesse,VALEUR_CONTESTATION.reponses_vitesse, SESSION_ID, 
NOM_QUESTION.questions_vitesse, TEXTE_QUESTION.questions_vitesse, OBLIGATOIRE.questions_vitesse 
FROM reponses_vitesse 
INNER JOIN questions_vitesse ON QUESTION.reponses_vitesse = QUESTION.questions_vitesse`
WHERE SESSION_ID.reponses_vitesse = 'apbt8p7g64g44jdc5o2bpp4t13' 
GROUP BY ID.reponses_vitesse 
ORDER BY ID.reponses_vitesse ASC

[Err] 1054 - 未知栏＆＃39; ID.reponses_vitesse＆＃39;在＆＃39;字段列表＆＃39;

Answer 1

查看您的查询的这一行：

INNER JOIN questions_vitesse ON QUESTION.reponses_vitesse = QUESTION.questions_vitesse`

最后有一个尾随的字符。但没有开放。

Answer 2

错误的具体原因是您错误地格式化了表/字段引用。而不是＆＃34; field.table＆＃34;，它应该是＆＃34; table.field＆＃34;。您收到的错误只发生在select语句的第一个字段上，因为MYSQL无法识别名为＆＃34; ID＆＃34;查询中的任何位置。您首先需要撤消所有引用。

看起来应该是这样的：

SELECT reponses_vitesse.ID, reponses_vitesse.QUESTION,reponses_vitesse.RESPONSE,reponses_vitesse.VALEUR_CONTESTATION, SESSION_ID, questions_vitesse.NOM_QUESTION, questions_vitesse.TEXTE_QUESTION, questions_vitesse.OBLIGATOIRE 
FROM reponses_vitesse 
INNER JOIN questions_vitesse ON reponses_vitesse.QUESTION = questions_vitesse.QUESTION
WHERE reponses_vitesse.SESSION_ID = 'apbt8p7g64g44jdc5o2bpp4t13' 
GROUP BY reponses_vitesse.ID
ORDER BY reponses_vitesse.ID ASC

mysql 5.5.24 - 奇怪的[Err] 1054 - 未知列

2 个答案: