Mysql翻页查询数据重复怎么办？

问题截图

复现步骤

# 创建测试表
CREATE TABLE `t_test_filesort` (`id` int(11) NOT NULL AUTO_INCREMENT,`config_id` varchar(32) NOT NULL COMMENT '配置编号',`robot_id` varchar(32) NOT NULL COMMENT '机器人编号',`operator` varchar(128) NOT NULL COMMENT '操作人员',`create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',`update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '更新时间',PRIMARY KEY (`id`),UNIQUE KEY `uk_config_id_robot_id` (`config_id`,`robot_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='测试filesort';# 插入假数据
insert into `t_test_filesort` (`id`, `config_id`, `robot_id`, `operator`) values
(44,"config001","robot621","英勇无比没有腹肌的Vincent"),
(10,"config001","robot6210","英勇无比没有腹肌的Vincent"),
(8,"config001","robot6211","英勇无比没有腹肌的Vincent"),
(14,"config001","robot6212","英勇无比没有腹肌的Vincent"),
(12,"config001","robot6213","英勇无比没有腹肌的Vincent"),
(2,"config001","robot6214","英勇无比没有腹肌的Vincent"),
(1,"config001","robot6215","英勇无比没有腹肌的Vincent"),
(4,"config001","robot6216","英勇无比没有腹肌的Vincent"),
(3,"config001","robot6217","英勇无比没有腹肌的Vincent"),
(6,"config001","robot6218","英勇无比没有腹肌的Vincent"),
(5,"config001","robot6219","英勇无比没有腹肌的Vincent"),
(45,"config001","robot622","英勇无比没有腹肌的Vincent"),
(35,"config001","robot6220","英勇无比没有腹肌的Vincent"),
(37,"config001","robot6221","英勇无比没有腹肌的Vincent"),
(36,"config001","robot6222","英勇无比没有腹肌的Vincent"),
(39,"config001","robot6223","英勇无比没有腹肌的Vincent"),
(38,"config001","robot6224","英勇无比没有腹肌的Vincent"),
(32,"config001","robot6225","英勇无比没有腹肌的Vincent"),
(40,"config001","robot623","英勇无比没有腹肌的Vincent"),
(42,"config001","robot624","英勇无比没有腹肌的Vincent"),
(13,"config001","robot625","英勇无比没有腹肌的Vincent"),
(15,"config001","robot626","英勇无比没有腹肌的Vincent"),
(9,"config001","robot627","英勇无比没有腹肌的Vincent"),
(11,"config001","robot628","英勇无比没有腹肌的Vincent"),
(7,"config001","robot629","英勇无比没有腹肌的Vincent"),
(46,"config001","robot62","英勇无比没有腹肌的Vincent"),
(19,"config001","robot71","英勇无比没有腹肌的Vincent"),
(41,"config001","robot710","英勇无比没有腹肌的Vincent"),
(43,"config001","robot711","英勇无比没有腹肌的Vincent"),
(18,"config001","robot72","英勇无比没有腹肌的Vincent"),
(20,"config001","robot74","英勇无比没有腹肌的Vincent"),
(24,"config001","robot75","英勇无比没有腹肌的Vincent"),
(22,"config001","robot76","英勇无比没有腹肌的Vincent"),
(28,"config001","robot77","英勇无比没有腹肌的Vincent"),
(26,"config001","robot78","英勇无比没有腹肌的Vincent"),
(33,"config001","robot79","英勇无比没有腹肌的Vincent"),
(29,"config001","robot810","英勇无比没有腹肌的Vincent"),
(16,"config001","robot811","英勇无比没有腹肌的Vincent"),
(17,"config001","robot812","英勇无比没有腹肌的Vincent"),
(21,"config001","robot83","英勇无比没有腹肌的Vincent"),
(25,"config001","robot84","英勇无比没有腹肌的Vincent"),
(23,"config001","robot85","英勇无比没有腹肌的Vincent"),
(30,"config001","robot86","英勇无比没有腹肌的Vincent"),
(27,"config001","robot87","英勇无比没有腹肌的Vincent"),
(34,"config001","robot88","英勇无比没有腹肌的Vincent"),
(31,"config001","robot89","英勇无比没有腹肌的Vincent");# 每页10条，查询第一页
select * from `t_test_filesort` where `config_id` = "config001" order by `update_time` DESC limit 0,10;
# 每页10条，查询第二页
select * from `t_test_filesort` where `config_id` = "config001" order by `update_time` DESC limit 10,10;

解决方案

# 每页10条，查询第一页
select * from `t_test_filesort` where `config_id` = "config001" order by `update_time` DESC, id ASC limit 0,10;
# 每页10条，查询第二页
select * from `t_test_filesort` where `config_id` = "config001" order by `update_time` DESC, id ASC limit 10,10;

问题总结

要排序的字段(update_time)值一样，排序没有了依据

If multiple rows have identical values in the ORDER BY columns, the server is free to return those rows in any order, and may do so differently depending on the overall execution plan. In other words, the sort order of those rows is nondeterministic with respect to the nonordered columns.

参考文档：
https://dev.mysql.com/doc/refman/8.0/en/limit-optimization.html
https://dba.stackexchange.com/questions/120961/mysql-order-by-is-equal-in-what-order-are-the-results-returned
https://stackoverflow.com/questions/6662837/how-mysql-order-the-rows-with-same-values

鸣谢：向老板、杨老板、郝老板

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