根据Field从mysql表中选择唯一记录

Question

我在MySQL中有一个表，我存储了注册信息。

我需要根据电子邮件字段和ID字段

选择所有行，但只选择最新行

我的表：

我需要

Answer 1

select *
from yourTablename
where (id,email) in 
        (select max(id),email from yourTablename group by email);

内部加入的另一种方法：（正如蒂姆所建议的那样）

SELECT t1.*
FROM t t1
INNER JOIN
(
    SELECT email, MAX(id) AS max_id
    FROM t t2
    GROUP BY email
) t2
    ON t1.email = t2.email AND
       t1.id  = t2.max_id;

DEMO

Answer 2

感谢您的回复。

使用

SELECT t1.*
FROM yourTable t1
INNER JOIN
(
    SELECT email, MAX(name) AS max_name
    FROM yourTable
    GROUP BY email
) t2
    ON t1.email = t2.email AND
       t1.name  = t2.max_name;

工作得很好。

由于