Question

我尝试连接三个表，然后将一个表过滤到每个用户的最新条目。但是，我突然遇到了错误promise。我需要加入这个＆＃34;复制＆＃34;柱。我该如何解决这个问题？

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Answer 1

在*中，您有两列username。您需要限定其中一个或两个。示例如下：

SELECT 
   customers.id,customers.name,customers.username,customers.phone,customers.email,radcheck.value as password
        FROM customers
        RIGHT JOIN radcheck ON customers.username = radcheck.username
        LEFT JOIN (
                SELECT radrecent.username, latest FROM radacct INNER JOIN (
                     --^^^^^^^^^
                    SELECT username,MAX(acctupdatetime) AS latest FROM radacct GROUP BY username
                ) as radrecent 
                ON radacct.username = radrecent.username 
                AND radacct.acctupdatetime = radrecent.latest
        ) as radlatest 
            ON customers.username = radlatest.username
        WHERE radcheck.attribute = 'Cleartext-Password'

连接时重复列

1 个答案: