mysql查询重复用户最新的一条数据

.0.1 -- 服务器版本: 8.0.15 - MySQL Community Server - GPL -- 服务器操作系统: Win64 -- HeidiSQL 版本: 9.5.0.5196 -- -------------------------------------------------------- /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */; /*!40101 SET NAMES utf8 */; /*!50503 SET NAMES utf8mb4 */; /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */; /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE=‘NO_AUTO_VALUE_ON_ZERO‘ */; -- 导出 表 test.score 结构 CREATE TABLE IF NOT EXISTS `score` ( `score_id` bigint(20) NOT NULL AUTO_INCREMENT, `student_name` varchar(32) DEFAULT NULL, `course` varchar(30) DEFAULT NULL, `score` int(11) DEFAULT NULL, `create_time` datetime DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`score_id`) ) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci; -- 正在导出表 test.score 的数据：~8 rows (大约) /*!40000 ALTER TABLE `score` DISABLE KEYS */; INSERT INTO `score` (`score_id`, `student_name`, `course`, `score`, `create_time`) VALUES (1, ‘张三‘, ‘语文‘, 66, ‘2019-07-24 10:35:05‘), (2, ‘张三‘, ‘数学‘, 88, ‘2019-12-24 10:35:05‘), (3, ‘张三‘, ‘英语‘, 92, ‘2019-02-24 10:35:05‘), (4, ‘李四‘, ‘语文‘, 95, ‘2019-06-24 10:35:05‘), (5, ‘李四‘, ‘数学‘, 55, ‘2019-08-24 10:35:05‘), (6, ‘李四‘, ‘英语‘, 22, ‘2019-03-24 10:35:05‘), (7, ‘王五‘, ‘语文‘, 99, ‘2019-06-23 10:35:05‘), (8, ‘王五‘, ‘数学‘, 88, ‘2019-08-24 10:35:05‘), (9, ‘王五‘, ‘英语‘, 77, ‘2019-05-24 10:35:05‘); /*!40000 ALTER TABLE `score` ENABLE KEYS */; /*!40101 SET SQL_MODE=IFNULL(@OLD_SQL_MODE, ‘‘) */; /*!40014 SET FOREIGN_KEY_CHECKS=IF(@OLD_FOREIGN_KEY_CHECKS IS NULL, 1, @OLD_FOREIGN_KEY_CHECKS) */; /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

执行sql

SELECT
    *
FROM
    (
        SELECT DISTINCT
            *
        FROM
            score
        ORDER BY
            create_time DESC
    ) s
GROUP BY
    s.student_name;

结果展示

2 张三 数学 88 2019-12-24 10:35:05
5 李四 数学 55 2019-08-24 10:35:05
8 王五 数学 88 2019-08-24 10:35:05

mysql查询重复用户最新的一条数据

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