All Questions
Tagged with mongodb-query pymongo
702
questions
1
vote
1
answer
28
views
Create array of elements based on another existing array using MongoDB Aggregation
I need to take a field from a document as input, like below:
"participants": ["John", "Peter"],
and make the output field like that:
"participants": [
{
...
0
votes
0
answers
51
views
field indicating last modification of a documont in mongodb
I am building an API over my mongodb cluster. Each call for the API should return only the newest values or the values that have been modified seen the last call. I thought i need to add a field to ...
- 13
0
votes
0
answers
37
views
in mongodb how do i save the last instance of archive entities
I have a a stream of entity transactions. Each transaction is a json consists of "_id" of the entity and a time of the transaction (there are many more fields). I want to save in the last ...
- 13
0
votes
0
answers
42
views
Using SQL LIKE operator in MongoDB indexes
I have a Flask app that queries my self-managed MongoDB.
I've created an index on two fields so that I can perform a text search on it.
The search is working fine, but it is only matching full words.
...
- 2,050
0
votes
0
answers
244
views
MongoDB BEanie ODM - Get all Documents linked to a Document
I have a Many to One relation, no BackLinks, if I have a Document, how, can I get all Documents linked to it?
I tried the following, but I just get an empty list back []:
import asyncio
from models ...
- 25
0
votes
1
answer
28
views
Bulk update using pymongo, merging python dictionary and DB collection
As an example, suppose we have the following dictionary list in memory
dict_list = [
{
'id': 1,
'from_value_key': 'x'
},
{
'id': 2,
'from_value_key': 'y'
},
{
'id': 4,
...
1
vote
1
answer
34
views
MongoDB: Map array of ids to objects while preserving order via aggregation functiona
I am using MongoDB to create a playlist maker. I have two separate collections:
Playlists
{
"_id": {
"$oid": "65e7a3006b0209462d08a5f5"
},
"playlist_name&...
1
vote
1
answer
64
views
Is there a mongo operation for getting the count of documents in a sorted (and or filtered) collection after and before a provided document (_id)?
For example, with pymongo:
I'm adding new document like this with a sequential index.
DB_1 = mongo ["DB_1"]
collection_1 = DB_1 ["collection_1"]
collection_1.insert_one ({
'...
- 1,861
-1
votes
1
answer
61
views
Struggling with MongoDB grouping by year, month and day query [duplicate]
DB STRUCTURE
date: 2022-01-01T03:28:00.000+00:00 (Date)
value: XXX (int)
write a queries to group documents by year, month and day summing relative values
filter_cond = {"$match": {"dt&...
0
votes
0
answers
50
views
How to get below format output data from Mongodb collection
expected output example: {count of job:number,sum of assets:number,count of job group by status:number,list of policy:policyname +policyid}.
{
"_id" : ObjectId("...
- 1
1
vote
1
answer
49
views
MongoDB - How to delete documents which included in a list
I want to delete documents from a collection which are not included in a list with Python.
All documents have a title field, and I have a list of the titles.
The list of titles is like below:
titles = ...
- 41
0
votes
0
answers
165
views
Mongodb: how to make task queue system and find/update_many in 1 query?
python: 3.9.17
pymongo: 4.5.0
OS: Ubuntu 20.04
server (one of): Intel(R) Xeon(R) CPU E5-2695 v4 @ 2.10GHz 72 cores
I am creating an app where users send tasks on high load (around 300 tasks per ...
- 1,713
0
votes
1
answer
54
views
Mongo DB .find_one(query) doesn't find results
I am trying to check if a user exists in my database based on the contact information (name, surname, email) that I have retrieved from data. I know that this information exists in my database but for ...
- 3
1
vote
1
answer
37
views
Insert if it doesn't exist, update based in ADDITIONAL condition [mongoDB]
I'm creating a sync system in which I have the following type of data:
records = [
{'_id': 0, 'name': 'John', 'sync_date': '2022-01-01 00:00:00'},
{'_id': 1, 'name': 'Paul', 'sync_date': '...
- 155
0
votes
1
answer
33
views
How to avoid duplicates in nested document while updating
My data model looks like this screenshot, also shown here:
{
"_id": "619f6735336c8d0498bb5d00",
"name": "Class 1",
"department": "...
- 23