SELECT *
FROM wn_trailer t INNER JOIN
(SELECT trailer_id, MAX(last_update) as max_last_update
FROM wn_trailer_history
GROUP BY trailer_id
) tht
ON t.id = tht.trailer_id INNER JOIN
wn_trailer_history th
ON th.trailer_id = tht.trailer_id AND
th.last_update = tht.max_last_update INNER JOIN
wn_trailer_status ts
ON ts.id = th.trailer_status INNER JOIN
wn_users u
ON u.id = th.trailer_assigned
ORDER BY trailer_number ASC;
中有两条路线：
AppRoutingModule如果用户进入根URL，如何默认设置其中之一：{ path: "list", component: ListComponent },
{ path: "drops", component: DropsComponent }
而是具体路径http://local或http://local/list
答案 0 :(得分：1)
您可以将''和redirectTo添加在一起，注意pathMatch:full
{ path: '', redirectTo: 'list', pathMatch: 'full' },
{ path: "list", component: ListComponent },
{ path: "drops", component: DropsComponent }