Group the documents in mongodb through nested levels
up vote
0
down vote
favorite
In a collection consider we have the documents as follows with matchQuery{oid:somex}:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>
},
{
_id: id5,
parentid:id1,
somefields:<some values>
},
{
_id: id6,
parentid: id1,
somefields:<some values>
},
{
_id: id7,
parentid: id2,
somefields:<some values>
},
{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
},
{
_id: id10,
parentid: id4,
somefields:<some values>
},
{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>
},
{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
},
]
I am able to achieve this with one level only using the following aggregate query:
db.random.aggregate([ { $match:{oid:"somex"}},{$group:{ _id:'$parentid', result: { $push: "$$ROOT" } } }]).toArray()
So it outputs as flat grouping based on parentid. Also grouping results with just parentId and its immediate children documents. I want to get the parent documents fields also, ideally all the fields of parent document too.
So I want to group it and get as nested as it is:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id5,
parentid:id1,
somefields:<some values>,
children:[{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>,
children: [{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
}]
}]
},
{
_id: id6,
parentid: id1,
somefields:<some values>
}]
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id7,
parentid: id2,
somefields:<some values>
}]
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>,
children: [{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
}]
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>,
children:[{
_id: id10,
parentid: id4,
somefields:<some values>
}]
}
]
Can anyone suggest me the aggregate query to achieve the expected result?
mongodb aggregation-framework
asked Nov 20 at 9:13
jerry
555415
add a comment |
up vote
0
down vote
favorite
In a collection consider we have the documents as follows with matchQuery{oid:somex}:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>
},
{
_id: id5,
parentid:id1,
somefields:<some values>
},
{
_id: id6,
parentid: id1,
somefields:<some values>
},
{
_id: id7,
parentid: id2,
somefields:<some values>
},
{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
},
{
_id: id10,
parentid: id4,
somefields:<some values>
},
{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>
},
{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
},
]
I am able to achieve this with one level only using the following aggregate query:
db.random.aggregate([ { $match:{oid:"somex"}},{$group:{ _id:'$parentid', result: { $push: "$$ROOT" } } }]).toArray()
So it outputs as flat grouping based on parentid. Also grouping results with just parentId and its immediate children documents. I want to get the parent documents fields also, ideally all the fields of parent document too.
So I want to group it and get as nested as it is:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id5,
parentid:id1,
somefields:<some values>,
children:[{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>,
children: [{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
}]
}]
},
{
_id: id6,
parentid: id1,
somefields:<some values>
}]
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id7,
parentid: id2,
somefields:<some values>
}]
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>,
children: [{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
}]
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>,
children:[{
_id: id10,
parentid: id4,
somefields:<some values>
}]
}
]
Can anyone suggest me the aggregate query to achieve the expected result?
mongodb aggregation-framework
asked Nov 20 at 9:13
jerry
555415
1
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is$graphLookup, which is actually "flatter" in output but is does recurse the children. And it does actually tell you at which "level" you actually matched, when you ask it to do so.
– Neil Lunn
Nov 20 at 9:18
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
In a collection consider we have the documents as follows with matchQuery{oid:somex}:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>
},
{
_id: id5,
parentid:id1,
somefields:<some values>
},
{
_id: id6,
parentid: id1,
somefields:<some values>
},
{
_id: id7,
parentid: id2,
somefields:<some values>
},
{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
},
{
_id: id10,
parentid: id4,
somefields:<some values>
},
{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>
},
{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
},
]
I am able to achieve this with one level only using the following aggregate query:
db.random.aggregate([ { $match:{oid:"somex"}},{$group:{ _id:'$parentid', result: { $push: "$$ROOT" } } }]).toArray()
So it outputs as flat grouping based on parentid. Also grouping results with just parentId and its immediate children documents. I want to get the parent documents fields also, ideally all the fields of parent document too.
So I want to group it and get as nested as it is:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id5,
parentid:id1,
somefields:<some values>,
children:[{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>,
children: [{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
}]
}]
},
{
_id: id6,
parentid: id1,
somefields:<some values>
}]
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id7,
parentid: id2,
somefields:<some values>
}]
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>,
children: [{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
}]
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>,
children:[{
_id: id10,
parentid: id4,
somefields:<some values>
}]
}
]
Can anyone suggest me the aggregate query to achieve the expected result?
mongodb aggregation-framework
asked Nov 20 at 9:13
jerry
555415
In a collection consider we have the documents as follows with matchQuery{oid:somex}:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>
},
{
_id: id5,
parentid:id1,
somefields:<some values>
},
{
_id: id6,
parentid: id1,
somefields:<some values>
},
{
_id: id7,
parentid: id2,
somefields:<some values>
},
{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
},
{
_id: id10,
parentid: id4,
somefields:<some values>
},
{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>
},
{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
},
]
I am able to achieve this with one level only using the following aggregate query:
db.random.aggregate([ { $match:{oid:"somex"}},{$group:{ _id:'$parentid', result: { $push: "$$ROOT" } } }]).toArray()
So it outputs as flat grouping based on parentid. Also grouping results with just parentId and its immediate children documents. I want to get the parent documents fields also, ideally all the fields of parent document too.
So I want to group it and get as nested as it is:
[{
_id: id1,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id5,
parentid:id1,
somefields:<some values>,
children:[{
_id: id11,
parentid: id5,
somefields:<some values>
},
{
_id: id12,
parentid: id5,
somefields:<some values>
},
{
_id: id13,
parentid: id5,
somefields:<some values>,
children: [{
_id: id14,
parentid: id13,
somefields:<some values>
},
{
_id: id15,
parentid: id13,
somefields:<some values>
}]
}]
},
{
_id: id6,
parentid: id1,
somefields:<some values>
}]
},
{
_id: id2,
parentid:ParentId1,
somefields:<some values>,
children: [{
_id: id7,
parentid: id2,
somefields:<some values>
}]
},
{
_id: id3,
parentid:ParentId2,
somefields:<some values>,
children: [{
_id: id8,
parentid: id3,
somefields:<some values>
},
{
_id: id9,
parentid: id3,
somefields:<some values>
}]
},
{
_id: id4,
parentid:ParentId3,
somefields:<some values>,
children:[{
_id: id10,
parentid: id4,
somefields:<some values>
}]
}
]
Can anyone suggest me the aggregate query to achieve the expected result?
mongodb aggregation-framework
mongodb aggregation-framework
asked Nov 20 at 9:13
jerry
555415
asked Nov 20 at 9:13
jerry
555415
asked Nov 20 at 9:13
jerry
555415
asked Nov 20 at 9:13
jerry
555415
asked Nov 20 at 9:13
jerry
555415
555415
1
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is$graphLookup, which is actually "flatter" in output but is does recurse the children. And it does actually tell you at which "level" you actually matched, when you ask it to do so.
– Neil Lunn
Nov 20 at 9:18
add a comment |
1
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is$graphLookup, which is actually "flatter" in output but is does recurse the children. And it does actually tell you at which "level" you actually matched, when you ask it to do so.
– Neil Lunn
Nov 20 at 9:18
1
1
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is
$graphLookup, which is actually "flatter" in output but is does recurse the children. And it does actually tell you at which "level" you actually matched, when you ask it to do so.– Neil Lunn
Nov 20 at 9:18
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is
$graphLookup, which is actually "flatter" in output but is does recurse the children. And it does actually tell you at which "level" you actually matched, when you ask it to do so.– Neil Lunn
Nov 20 at 9:18
add a comment |
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53389657%2fgroup-the-documents-in-mongodb-through-nested-levels%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is
$graphLookup, which is actually "flatter" in output but is does recurse the children. And it does actually tell you at which "level" you actually matched, when you ask it to do so.– Neil Lunn
Nov 20 at 9:18