SQL DELETE在PHPmyAdmin中墮落

Question

SQL DELETE在PHPmyAdmin中垮臺。無法解決原因;是因爲左外連接？

SELECT * 
    FROM `User` 
LEFT OUTER JOIN `freshersdata` ON `User`.`username`=`freshersdata`.`username` 
WHERE (`freshersdata`.`username` IS null) 
    AND (`User`.`Persistent`!=1) 

該SQL查詢翻倒用（＃1064 - 你在你的SQL語法錯誤）消息，但用SELECT而不是刪除工作perfecly，這是爲什麼？

Answer 1

您必須指定從哪個表要刪除：

例如來自用戶：

DELETE User.* 
    FROM User 
LEFT OUTER JOIN freshersdata ON User.username=freshersdata.username 
WHERE (freshersdata.username IS null) AND (User.Persistent!=1) 

Answer 2

DELETE FROM User 
LEFT OUTER JOIN 
    freshersdata ON User.username=freshersdata.username 
WHERE (freshersdata.username IS null) AND (User.Persistent!=1)