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SELECT t2.workingstatus
FROM SKILL_SET t1, Employee_Status t2
ON t1.USER_ID = t2.USER_ID
WHERE t1.TRAININGS_ATTENDED='java'
是什么在此查询错误在此MySQL查询
SELECT t2.workingstatus
FROM SKILL_SET t1, Employee_Status t2
ON t1.USER_ID = t2.USER_ID
WHERE t1.TRAININGS_ATTENDED='java'
是什么在此查询错误在此MySQL查询
你应该张贴您的错误消息以及错误。
尝试如下:
SELECT t2.workingstatus
FROM SKILL_SET t1 JOIN Employee_Status t2 -- (can be LEFT JOIN)
ON t1.USER_ID = t2.USER_ID
WHERE t1.TRAININGS_ATTENDED='java';
JOIN需要指定。
使用关键字ON与连接查询
SELECT t2.workingstatus
FROM SKILL_SET t1 INNER JOIN Employee_Status t2
ON t1.USER_ID = t2.USER_ID
WHERE t1.TRAININGS_ATTENDED='java'
您正在试图将两种不同的连接语法。所以,跳过','而是使用'INNER JOIN'。 –
SELECT t2.workingstatus FROM SKILL_SET t1 join Employee_Status t2 ON t1.USER_ID = t2.USER_ID WHERE t1.TRAININGS_ATTENDED ='java' –
什么是错误信息? –