Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 3 years ago. Improve this question I’m trying to figure it out what can I use for a future project, we plan … Read more
How would I find duplicate fields in a mongo collection. I’d like to check if any of the “name” fields are duplicates. { “name” : “ksqn291”, “__v” : 0, “_id” : ObjectId(“540f346c3e7fc1054ffa7086”), “channel” : “Sales” } Many thanks! 9 Answers 9
I am trying to change the type of a field from within the mongo shell. I am doing this… db.meta.update( {‘fields.properties.default’: { $type : 1 }}, {‘fields.properties.default’: { $type : 2 }} ) But it’s not working! 13 Answers 13
Here is array structure contact: { phone: [ { number: “+1786543589455”, place: “New Jersey”, createdAt: “” } { number: “+1986543589455”, place: “Houston”, createdAt: “” } ] } Here I only know the mongo id(_id) and phone number(+1786543589455) and I need to remove that whole corresponding array element from document. i.e zero indexed element in phone … Read more
I am just starting out with MongoDB and one of the things that I have noticed is that it uses BSON to store data internally. However the documentation is not exactly clear on what BSON is and how it is used in MongoDB. Can someone explain it to me, please? 7 Answers 7
Is there a way to specify a condition of “where document doesn’t contain field” ? For example, I want to only find the first of these 2 because it doesn’t have the “price” field. {“fruit”:”apple”, “color”:”red”} {“fruit”:”banana”, “color”:”yellow”, “price”:”2.00″} 1 Answer 1
How to I get mongo to use a mounted drive on ec2? I really do not understand. I attached a volume on ec2 formatted the drive as root and start as root and yet as root I cant access? I am running on ubuntu 12.04. No other mongo is running I see that mongo made … Read more
The question is as basic as it is simple… How do you log all queries in a “tail”able log file in mongodb? I have tried: setting the profiling level setting the slow ms parameter starting mongod with the -vv option The /var/log/mongodb/mongodb.log keeps showing just the current number of active connections… 16 Answers 16
I tried mongo replica sets for the first time. I am using ubuntu on ec2 and I booted up three instances. I used the private IP address of each of the instances. I picked on as the primary and below is the code. mongo –host Private IP Address rs.initiate() rs.add(“Private IP Address”) rs.addArb(“Private IP Address”) … Read more
I have mongoDB 3.2 installed locally for Windows 7. I would like to find out its specific version (like is it 3.2.1, or 3.2.3 or…). How could I find it? If I open the database shell (mongo.exe), I can see it outputs: MongoDB shell version: 3.2.0 But that’s just the shell version, and I’m not … Read more
