51
votes
15
answers
1.5K
views
How to remove a field completely from a MongoDB document?
{ name: 'book', tags: { words: ['abc','123'], lat: 33,
61
votes
6
answers
1.8K
views
Add new field to every document in a MongoDB collection
How can I add a new field to every document in an existent collection? I know how to update an existing docum
56
votes
18
answers
1.2K
views
How to secure MongoDB with username and password
I want to set up user name & password authentication for my MongoDB instance, so that any remote access wi
59
votes
14
answers
2.5K
views
Retrieve only the queried element in an object array in MongoDB collection
Suppose you have the following documents in my collection: { "_id":ObjectId("562e7c594c12942f08fe4192"),
62
votes
23
answers
2.8K
views
How do I update/upsert a document in Mongoose?
Perhaps it's the time, perhaps it's me drowning in sparse documentation and not being able to wrap m
53
votes
21
answers
335
views
How to execute mongo commands through shell scripts?
I want to execute mongo commands in shell script, e.g. in a script test.sh: #!/bin/sh mongo myDbName db.mycol
59
votes
11
answers
2K
views
Update MongoDB field using value of another field
In MongoDB, is it possible to update the value of a field using the value from another field? The equivalent
60
votes
19
answers
1.3K
views
MongoDB or CouchDB - fit for production?
I was wondering if anyone can tell me if MongoDB or CouchDB are ready for a production environment.
61
votes
17
answers
1.1K
views
Delete everything in a MongoDB database
I'm doing development on MongoDB. For totally non-evil purposes, I sometimes want to blow away everything
53
votes
15
answers
1.6K
views
Find objects between two dates MongoDB
I've been playing around storing tweets inside mongodb, each object looks like this: { "_id" : ObjectId(
62
votes
11
answers
1.7K
views
How do you query for "is not null" in Mongo?
I would like to execute a following query: db.mycollection.find(HAS IMAGE URL) What should be the correct s
53
votes
28
answers
3K
views
Mongod complains that there is no /data/db folder
I am using my new mac for the first time today. I am following the get started guide on the mongodb.org up unt
60
votes
10
answers
436
views
How do you rename a MongoDB database?
There's a typo in my MongoDB database name and I'm looking to rename the database. I can copy and d
59
votes
19
answers
2.8K
views
How do I perform the SQL Join equivalent in MongoDB?
How do I perform the SQL Join equivalent in MongoDB? For example say you have two collections (users and comm
52
votes
8
answers
541
views
Pretty print in MongoDB shell as default
Is there a way to tell Mongo to pretty print output? Currently, everything is output to a single line and it&a
60
votes
14
answers
1.9K
views
Checking if a field contains a string
I'm looking for an operator, which allows me to check, if the value of a field contains a certain string.
52
votes
10
answers
1.3K
views
MongoDB relationships: embed or reference?
I'm new to MongoDB--coming from a relational database background. I want to design a question structure w
54
votes
12
answers
2.4K
views
Find document with array that contains a specific value
If I have this schema... person = { name : String, favoriteFoods : Array } ... where the favoriteFo
51
votes
15
answers
1.8K
views
How to get the last N records in mongodb?
I can't find anywhere it has been documented this. By default, the find() operation will get the records
63
votes
13
answers
1.3K
views
Find MongoDB records where array field is not empty
All of my records have a field called "pictures". This field is an array of strings. I now want the newest 10