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MongoDB group by ranges on multiple fields

I have the following docs in my DB:
{
Age : 10,
BPM : 20,
Price: 6
},
{
Age : 12,
BPM : 30,
Price: 9
},
{
Age : 15,
BPM : 40,
Price: 6
},
{
Age : 10,
BPM : 46,
Price: 7
},
{
Age : 20,
BPM : 60,
Price: 8
}
I need help to write an aggregate query to find out for groups (age range 10-15 & BPM 20-50), (age range 15 - 20 & BPM 40 - 90), What is the total sum of prices for each group of ranges. There can be few more groups of ranges.

When you have multiple conditions, one option is to use $switch:
db.collection.aggregate([
{$set: {
group: {$switch: {
branches: [
{case: {
$and: [
{$gte: ["$Age", 10]},
{$lt: ["$Age", 15]},
{$gte: ["$BPM", 20]},
{$lt: ["$BPM", 50]}
]
}, then: 1},
{case: {
$and: [
{$gte: ["$Age", 15]},
{$lt: ["$Age", 20]},
{$gte: ["$BPM", 40]},
{$lt: ["$BPM", 90]}
]
}, then: 2}
],
default: "Did not match"
}}
}},
{$group: {_id: "$group", totalSumOfPrices: {$sum: "$Price"}}}
])
See how it works on the playground example

Complicate linq query which filter out duplicate value

I have a json as data as below :
[
{
"id": 1,
"shopname": "seven up",
"shopkeeper": "John",
"salesbooks": [
{
"bookid": 11,
"bookname": "Tom-story",
"catagories" : 1,
"soldout": false
},
{
"bookid": 12,
"bookname": "Iron-Man",
"catagories" : 2,
"soldout": true
}
]
},
{
"id": 2,
"shopname": "Richmond Shop",
"shopkeeper": "Jame",
"salesbooks": [
{
"bookid": 11,
"bookname": "Tom-story",
"catagories" : 2,
"soldout": false
},
{
"bookid": 13,
"bookname": "PeterPan",
"catagories" : 2,
"soldout": true
}
]
},
{
"id": 3,
"shopname": "Worchester Shop",
"shopkeeper": "Jame",
"salesbooks": [
{
"bookid": 15,
"bookname": "Jurias Park",
"catagories" : 1,
"soldout": false
},
{
"bookid": 16,
"bookname": "Champion",
"catagories" : 1,
"soldout": true
}
]
}
]
My expected result should be:
[
{
"id": 1,
"shopname": "seven up",
"shopkeeper": "John",
"salesbooks": [
{
"bookid": 11,
"bookname": "Tom-story",
"catagories" : 1,
"soldout": false
},
{
"bookid": 12,
"bookname": "Iron-Man",
"catagories" : 2,
"soldout": true
}
]
}
]
Normally, if require to get shop which have book on sales , I can do it
var bookshop = bookshops.where(w=>w.salesbooks.any(a=>a.soldout==false));
But this time, if I also want to filter out if count(salesbooks.catagories) > 1?
That mean I want to filter out id:2 bookshop , as both of salesbook.catagories are same.
How to write the linq in c#?
p.s. I try
var bookshop = bookshops.where(w=>w.salesbooks.any(a=>a.soldout==false) && w.salebooks.GroupBy(g=>g.catagories).count==1);
the result is still show Richmond shop
Thank you

If you just want to filter out bookshops with categories more than 1. In C# You can just group by categories and have a check for >1 rather than ==1 i.e.
C# code
var bookshop = bookshops.Where(w => w.salesbooks.Any(a => a.soldout == false) && w.salesbooks.GroupBy(g => g.catagories).Count() > 1;

you can use another clause like
var bookshop = bookshops.Where(w => w.salesbooks.Any(a => a.soldout == false) && !w.salesbooks.Any(a => a.catagories < 2) );
Hope this helps

Cosmos query to fetch only specific inner array items that meets specific condition

In cosmos DB the document structure is like this
[
{
"id": "1",
"Plants": [
{
"PlantId": 3,
"UniqueQualityId": "3_pe55d74fc5f92b11ab3fe"
},
{
"PlantId": 4,
"UniqueQualityId": "3_pe55d74fc5sdfmsdfklms"
},
{
"PlantId": 10,
"UniqueQualityId": "3_pe55d7akjdsj6ysdssdsd"
},
{
"PlantId": 12,
"UniqueQualityId": "5_fdffpe55d7akjdsj6ysds"
}
],
"CompletionTime": 36
},
{
"id": "2",
"Plants": [
{
"PlantId": 3,
"UniqueQualityId": "3_pe55d74fc5f92b11ab3fe"
},
{
"PlantId": 4,
"UniqueQualityId": "3_pe55d74fc5sdfmsdfklms"
},
{
"PlantId": 3,
"UniqueQualityId": "3_pe55d74fc5f92b11ab3fe"
},
{
"PlantId": 5,
"UniqueQualityId": "3_pe55d7akjdsj6ysdssdsd"
}
],
"CompletionTime": 36
},
{
"id": "2",
"Plants": [
{
"PlantId": 10,
"UniqueQualityId": "3_pe55d74fc5f92b11ab3fe"
},
{
"PlantId": 11,
"UniqueQualityId": "3_pe55d74fc5sdfmsdfklms"
}
],
"CompletionTime": 36
}
]
I need to get the collection of plants that meets specific condition:
For example, the query is written as to fetch Plants along with some parent data where PlantId in ("3","4") , then the output am expecting is
[
{
"id": "1",
"Plants": [
{
"PlantId": 3,
"UniqueQualityId": "3_pe55d74fc5f92b11ab3fe"
},
{
"PlantId": 4,
"UniqueQualityId": "3_pe55d74fc5sdfmsdfklms"
}
],
"CompletionTime": 36
},
{
"id": "2",
"Plants": [
{
"PlantId": 3,
"UniqueQualityId": "3_pe55d74fc5f92b11ab3fe"
},
{
"PlantId": 4,
"UniqueQualityId": "3_pe55d74fc5sdfmsdfklms"
}
}
],
"CompletionTime": 36
}
]
Here in the plants array it should only contain the items that meet the filtered condition.
I have tried the following methods
SELECT root["Plants"],root.id FROM root
WHERE EXISTS(select value plant FROM plant in root.Plants WHERE plant.PlantId in ("3","4"))
SELECT root.id,root.Plants FROM root where ARRAY_CONTAINS(c.Plants,{"PlantId": "3"},true)
If any of the plant items meet the condition it is returning the entire plant array instead of specific items.
Is there any method where it will return only the specific array items that meet the condition?

You can use the following query to get the result to get the output you want:
SELECT
c.id,
ARRAY(
SELECT VALUE p
FROM p IN c.Plants
WHERE p.PlantId IN (3, 4)
) AS Plants,
c.CompletionTime
FROM c
Although my personal preference would be the query below that does the same, but creates a seperate item for every plant. From the context I understand that you are looking for specific plants and capture some parent data in the result. In that case it would make sense to have seperate results by the plant.
SELECT
c.id,
p AS Plant,
c.CompletionTime
FROM c
JOIN
(
SELECT VALUE p
FROM p IN c.Plants
WHERE p.PlantId IN (3, 4)
) AS p

$[<identifier>] operator syntax in C# MongoDB Driver for nested array update in a Document

I need to update point Description field highlighted inside the nested Document using C# Mongo DB driver. I can do this update successfully using following query.
Document Structure
{
"ControllerID": "testcon",
"CCNID": "testccn",
"TableGroup": 1,
"Tables": [
{
"ID": 0,
"TableGroupID": 1,
"Blocks": [
{
"ID": 0,
"TableID": 0,
"TableGroupID": 1,
"ControllerID": "testcon",
"Points": [
{
"BlockID": 0,
"TableGroupID": 1,
"ControllerID": "testcon",
"TableID": 0,
"PointDefinitionID": 23,
"Name": "Test Point",
"Description": "Hgfhdhfhey You" <----------- This field needs to be updated
},
{
"BlockID": 0,
"TableGroupID": 1,
"ControllerID": "testcon",
"TableID": 0,
"PointDefinitionID": 24,
"Name": "Test Point",
"Description": "Hgfhdhfhey You"
}
]
}
]
}
]
}
I can successfully update the point Description using this query.
db.ControllerPointCollection.updateOne({
"_id": "HRDC_testccn_0_34_1"
},
{
$set: {
"Tables.$[t].Blocks.$[b].Points.$[p].Description": "Hey You"
}
},
{
arrayFilters: [
{
"t.ID": 0
},
{
"b.ID": 0
},
{
"p.PointDefinitionID": 23
}
]
})
I tried using this filter and update object for the above operation
var pointFilter = Builders<Point>.Filter.Eq(p => p.PointDefinitionID, point.PointDefinitionID);
var blockFilter = Builders<Block>.Filter.Eq(b => b.ID, point.BlockID) & Builders<Block>.Filter.ElemMatch(b => b.Points, pointFilter);
var tableFilter = Builders<Table>.Filter.Eq(t => t.ID, point.TableID) & Builders<Table>.Filter.ElemMatch(t => t.Blocks, blockFilter);
var filter = Builders<ControllerPointDataDoc>.Filter.Eq(c => c.ID, point.ControllerID) & Builders<ControllerPointDataDoc>.Filter.ElemMatch(c => c.Tables, tableFilter);
var updater = Builders<ControllerPointDataDoc>.Update.Set(c => c.Tables[-1].Blocks[-1].Points[-1].Description, "Hey You");
operationResult.Data = await ControllerPointDataCollection.UpdateOneAsync(filter, updater);
but I am getting the following error.
A write operation resulted in an error.\r\n Too many positional (i.e. '$') elements found in path 'Tables.$.Blocks.$.Points'

C# Json deserisalization

In C# how can I select only "GroupType" from the json below.
Thanks.
{
"QnACollection": {
"QnA": [
{
"id": 11,
"question": "What was your childhood nickname?"
},
{
"id": 12,
"question": "In what city was your mother born?"
},
{
"GroupType": "RUN",
"id": 45,
"question": "What is the first name?"
}
]
}
}

Using Json.Net
var value = (string)JObject.Parse(json)
.Descendants().OfType<JProperty>()
.FirstOrDefault(p => p.Name == "GroupType");