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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'
是什麼在此查詢錯誤在此MySQL查詢
SELECT t2.workingstatus
FROM SKILL_SET t1, Employee_Status t2
ON t1.USER_ID = t2.USER_ID
WHERE t1.TRAININGS_ATTENDED='java'
是什麼在此查詢錯誤在此MySQL查詢
你應該張貼您的錯誤消息以及錯誤。
嘗試如下:
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。
使用關鍵字ON與連接查詢
SELECT t2.workingstatus
FROM SKILL_SET t1 INNER JOIN Employee_Status t2
ON t1.USER_ID = t2.USER_ID
WHERE t1.TRAININGS_ATTENDED='java'
您正在試圖將兩種不同的連接語法。所以,跳過','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' –
什麼是錯誤信息? –