关于mysql的大数据offset 优化

我们先查出偏移后的主键，再根据主键索引查询数据块的所有内容即可优化。

mysql> select a.* from member as a inner join (select id from member where gender=1 limit 300000,1) as b on a.id=b.id;
+--------+------------+--------+
| id | name | gender |
+--------+------------+--------+
| 599465 | f48375bdb8 | 1 |
+--------+------------+--------+
1 row in set (0.08 sec)