Mongodb
MongoDB is a scalable, high-performance, open source, document-oriented NoSQL database. It supports a large number of languages and application development platforms. Questions about server administration can be asked on http://dba.stackexchange.com.
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Retrieve only the queried element in an object array in MongoDB collection
Suppose you have the following documents in my collection: { "_id":ObjectId("562e7c594c12942f08fe4192"),
53
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21
answers
334
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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
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11
answers
2K
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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
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19
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1.3K
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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
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17
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1.1K
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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
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15
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1.6K
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Find objects between two dates MongoDB
I've been playing around storing tweets inside mongodb, each object looks like this: { "_id" : ObjectId(
62
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11
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1.7K
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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
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28
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3K
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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
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10
answers
435
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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
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19
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2.8K
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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
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8
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540
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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
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14
answers
1.9K
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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
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10
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1.3K
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MongoDB relationships: embed or reference?
I'm new to MongoDB--coming from a relational database background. I want to design a question structure w
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12
answers
2.4K
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Find document with array that contains a specific value
If I have this schema... person = { name : String, favoriteFoods : Array } ... where the favoriteFo
51
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15
answers
1.8K
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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
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13
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1.3K
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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
53
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7
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600
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When to use CouchDB over MongoDB and vice versa
I am stuck between these two NoSQL databases. In my project I will be creating a database within a database.
48
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14
answers
3K
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Query for documents where array size is greater than 1
I have a MongoDB collection with documents in the following format: { "_id" : ObjectId("4e8ae86d08101908e10
56
votes
22
answers
2.4K
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How can I list all collections in the MongoDB shell?
In the MongoDB shell, how do I list all collections for the current database that I'm using?
67
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20
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2.6K
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How do I drop a MongoDB database from the command line?
What's the easiest way to do this from my bash prompt?