I know that it is a bad practice to use skip in order to implement pagination, because when your data gets large skip starts to consume a lot of memory. One way to overcome this trouble is to use natural order by _id field:  //Page 1 db.users.find(...
Is there any way we can query and get location data using mongodb geospatial query that matches the following criteria?   Getting all locations that are part of intersection between two boxes or in general two polygons.   For example below can we get...
Is it possible to insert in Mongo with condition;  //Pseudo code  Bulk Insert Item :  If Key exists     Skip, don't throw error If key does not exist     Add item   If i do single inserts, it might return an error or insert in the collection, but...
Suppose we have a collection of raw data:  { "person": "David, age 102"} { "person": "Max, age 8" }   and we'd like to transform that collection to:  { "age": 102 } { "age": 8 }   using only mongo(d...
I'm new to MongoDB and Mongoose and I'm trying to use it to save stock ticks for daytrading analysis. So I imagined this Schema:  symbolSchema = Schema({     name:String,     code:String });  quoteSchema = Schema({     date:{type:Date, defaul...
In my model definition, I have:  appFeatures: [{         name: String,         param : [{             name : String,             value : String         }]     }]   I want to set default value to appFeatures, for example: name: 'feature', para...
This is my collection:   {         "_id" : 10926400,         "votes": 131,         "author": "Jesse",         "comments" : [                 {                         "id" : 1,                         &...
I have the following Schema in Mongo:  var OrderSchema = new Schema({     postcode: String,     ...     status: {         last_check: { type: Date },         date: Date,         code: String,         postnum: String,         text: String,         cla...
I want to join collection. before, I used only lookup, so that I could get separated field that is joined. but I need to get result similar mysql join. I noticed there is $lookup and $mergeObjects for this action but not working well.  user collectio...
{ "_id": "1", "style": "13123", "category": "dress", "colors": {     "Black": {         "prestock": 50,         "instock": 60,         "inactive": 0         },...

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