I have a data like this in mongodb { "latitude" : "", "longitude" : "", "course" : "", "battery" : "0", "imei" : "0", "altitude" : "F:3.82V", "mcc" :...
How can I (in MongoDB) combine data from multiple collections into one collection? Can I use map-reduce and if so then how? I would greatly appreciate some example as...
If you have subdocument arrays, Mongoose automatically creates ids for each one. Example: { _id: "mainId" subDocArray:...
db.foo.find().limit(300) won’t do it. It still prints out only 20 documents. db.foo.find().toArray() db.foo.find().forEach(printjson) will both print out very expanded view of each document instead of the 1-line version for...
I am writing a webapp with Node.js and mongoose. How can I paginate the results I get from a .find() call? I would like a functionality comparable to "LIMIT...
I have a basic node.js app that I am trying to get off the ground using Express framework. I have a views folder where I have an index.html file....
Following is my user schema in user.js model – var userSchema = new mongoose.Schema({ local: { name: { type: String }, email : { type: String, require: true, unique:...
I can see that Docker takes 12GB of my filesystem: 2.7G /var/lib/docker/vfs/dir 2.7G /var/lib/docker/vfs 2.8G /var/lib/docker/devicemapper/mnt 6.3G /var/lib/docker/devicemapper/devicemapper 9.1G /var/lib/docker/devicemapper 12G /var/lib/docker But, how do I know how this...
In my MongoDB, I have a student collection with 10 records having fields name and roll. One record of this collection is: { "_id" : ObjectId("53d9feff55d6b4dd1171dd9e"), "name" : "Swati",...
I have an array of _ids and I want to get all docs accordingly, what’s the best way to do it ? Something like … // doesn't work ......