Php 从不同的表中查询另一列

我想从表

users

中查询列

gravatar\u email

，我想在使用此查询时执行此操作

SELECT 
    u.username, u1.maxword, MAX(u.date_created) as date,user_id
FROM
    user_records u
        INNER JOIN
    (SELECT 
        username,DATE(date_created) date_created, MAX(wordpermin) AS maxword
    FROM
        user_records
    GROUP BY username,DATE(date_created)) u1 ON u.username = u1.username
        AND u.wordpermin = u1.maxword AND Date(u.date_created) = DATE(u1.date_created)
WHERE
    DATE(u.date_created) = CURDATE()
GROUP BY (username)
ORDER BY maxword DESC
LIMIT 20

---

此查询从一个名为

user\u records

的表调用数据，并且两个表都有一个名为

username

的列，因此我想使用它调用

gravatar\u email

与

用户

联合以获取

gravatar\u email

列

SELECT 
    u.username, u1.maxword, MAX(u.date_created) as date,user_id, users.gravatar_email
FROM
    user_records u
INNER JOIN
    (SELECT 
        username,DATE(date_created) date_created, MAX(wordpermin) AS maxword
    FROM
        user_records
    GROUP BY username,DATE(date_created)) u1 ON u.username = u1.username
        AND u.wordpermin = u1.maxword AND Date(u.date_created) = DATE(u1.date_created)
INNER JOIN users ON users.username = u.username
WHERE
    DATE(u.date_created) = CURDATE()
GROUP BY u.username
ORDER BY maxword DESC
LIMIT 20