关于是否将主键加入联合索引
有大牛已经测试过了,建议加进去,innoDB引擎会自动忽略
https://blog.csdn.net/babydavic/article/details/8196310
有大牛已经测试过了,建议加进去,innoDB引擎会自动忽略
https://blog.csdn.net/babydavic/article/details/8196310
2019-07-03
针对不连续id分页:
select film_id,description
from film f1
inner join
(select film_id from film limit 55,5) f2
using(film_id)
select film_id,description
from film f1
inner join
(select film_id from film limit 55,5) f2
using(film_id)
2019-07-03