Group the documents in mongodb through nested levels
0
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 '18 at 9:13
jerryjerry
555415
add a comment |
0
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 '18 at 9:13
jerryjerry
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 '18 at 9:18
add a comment |
0
0
0
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 '18 at 9:13
jerryjerry
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 '18 at 9:13
jerryjerry
555415
asked Nov 20 '18 at 9:13
jerryjerry
555415
asked Nov 20 '18 at 9:13
jerryjerry
555415
asked Nov 20 '18 at 9:13
jerryjerry
555415
asked Nov 20 '18 at 9:13
jerryjerry
555415
555415
1
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is$graphLookup, which is actually "flatter" in output but is does recurse the children. And it does actually tell you at which "level" you actually matched, when you ask it to do so.
– Neil Lunn
Nov 20 '18 at 9:18
add a comment |
1
Nothing will produce a "nested" result with unspecified recursion ( this is actually a good thing). What you can do is$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 '18 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 '18 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 '18 at 9:18
add a comment |
0
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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 '18 at 9:18