更改特定mongo记录的顺序

Question

在mongodb中，记录如下所示

{ "_id" : ObjectId("5191fc1206610430cd000004"), "ancestry" : null, "name" : "root" }
{ "_id" : ObjectId("5191fc1306610430cd000005"), "ancestry" : null, "name" : "root1"}
{ "_id" : ObjectId("5191fc2706610430cd000006"), "ancestry" : null, "name" : "root2"}
{ "_id" : ObjectId("5191fc2806610430cd000007"), "ancestry" : null, "name" : "root3"}

我想像这样改变记录的顺序

{ "_id" : ObjectId("5191fc2706610430cd000006"), "ancestry" : null, "name" : "root2"}
{ "_id" : ObjectId("5191fc1206610430cd000004"), "ancestry" : null, "name" : "root" }
{ "_id" : ObjectId("5191fc1306610430cd000005"), "ancestry" : null, "name" : "root1"}
{ "_id" : ObjectId("5191fc2806610430cd000007"), "ancestry" : null, "name" : "root3"}

并且我有以下信息节点要移动

{ "_id" : ObjectId("5191fc2706610430cd000006"), "ancestry" : null, "name" : "root2"}

移动到哪个节点之前

{ "_id" : ObjectId("5191fc1206610430cd000004"), "ancestry" : null, "name" : "root" }

我该怎么做呢？？

Answer 1

你不能这么做。您不能更改记录的顺序。它们(几乎)是按objectId排序的。如果你想根据一个参数进行排序，那么把它放到你的对象中，然后按这个参数排序。