如何通过id Mysql获取最新记录？

Question

我正在使用此查询，它返回与 id_order 关联的所有记录，但我想要id_order的最新记录（Adminer 4.7.5 4.7.7）

SELECT *
FROM `order_history`  
WHERE `id_order` IN (5499,5500) ORDER BY id_order_history DESC

所需的记录看起来像

有什么想法吗？

Answer 1

您可以使用相关查询获取每个订单的最新记录

select *
from `order_history`  o
where `id_order` in (5499,5500) 
and date_add= (
    select max(date_add)
    from order_history 
    where o.id_order = id_order
)
order by id_order_history desc

如果您想根据id_order_history的最大值选择最近的一行

select *
from `order_history`  o
where `id_order_history` in (5499,5500) 
and id_order_history = (
    select max(id_order_history )
    from order_history 
    where o.id_order = id_order
)
order by id_order_history desc