mongodb Archives - Page 4 of 11

Date query with ISODate in mongodb doesn’t seem to work

I don’t seem to be able to get even the most basic date query to work in MongoDB. With a document that looks ...

May 25, 2022
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MongoDB Show all contents from all collections

Is it possible to show all collections and its contents in MongoDB? Is the only way to show one by one? 6 Answers ...

May 25, 2022
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add created_at and updated_at fields to mongoose schemas

Is there a way to add created_at and updated_at fields to a mongoose schema, without having to pass them in everytime new MyModel() ...

May 25, 2022
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How do you update objects in a document’s array (nested updating)

Assume we have the following collection, which I have few questions about: { "_id" : ObjectId("4faaba123412d654fe83hg876"), "user_id" : 123456, "total" : 100, "items" ...

May 25, 2022
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What did MongoDB not being ACID compliant before v4 really mean?

I am not a database expert and have no formal computer science background, so bear with me. I want to know the kinds ...

May 23, 2022
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What are naming conventions for MongoDB?

Is there a set of preferred naming conventions for MongoDB entitites such as databases, collections, field names? I was thinking along these lines: ...

May 23, 2022
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How do I partially update an object in MongoDB so the new object will overlay / merge with the existing one

Given this document saved in MongoDB { _id : ..., some_key: { param1 : "val1", param2 : "val2", param3 : "val3" } } ...

May 23, 2022
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MongoDB: update every document on one field

I have a collected named foo hypothetically. Each instance of foo has a field called lastLookedAt which is a UNIX timestamp since epoch. ...

May 22, 2022
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MongoDB inserts float when trying to insert integer

> db.data.update({'name': 'zero'}, {'$set': {'value': 0}}) > db.data.findOne({'name': 'zero}) {'name': 'zero', 'value': 0.0} How do I get Mongo to insert an integer? Thank ...

May 21, 2022
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How to query nested objects?

I have a problem when querying mongoDB with nested objects notation: db.messages.find( { headers : { From: "reservations@marriott.com" } } ).count() 0 db.messages.find( ...

May 20, 2022
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