How to sort a collection by date in MongoDB?
Just a slight modification to @JohnnyHK answer In many use cases we wish to have latest records to be returned (like for latest updates / inserts).
mongodb
Properly close mongoose’s connection once you’re done
You can close the connection with
In Mongoose, how do I sort by date? (node.js)
Sorting in Mongoose has evolved over the releases such that some of these answers are no longer valid. As of the 4.1.x release of Mongoose, a descending sort on the date field can be done in any of the following ways: For an ascending sort, omit the – prefix on the string version or use … Read more
How to update a array value in Mongoose
You can’t use both $set and $push in the same update expression as nested operators. The correct syntax for using the update operators follows: where <operator1>, <operator2> can be from any of the update operators list specified here. For adding a new element to the array, a single $push operator will suffice e.g. you can … Read more
MongoDB: exception in initAndListen: 20 Attempted to create a lock file on a read-only directory: /data/db, terminating
I created /data/db in root directory and ran ./mongod:
How to query MongoDB with “like”
That would have to be: Or, similar: You’re looking for something that contains “m” somewhere (SQL’s ‘%‘ operator is equivalent to regular expressions’ ‘.*‘), not something that has “m” anchored to the beginning of the string. Note: MongoDB uses regular expressions which are more powerful than “LIKE” in SQL. With regular expressions you can create any … Read more
db.collection is not a function when using MongoClient v3.0
I encountered the same thing. In package.json, change mongodb line to “mongodb”: “^2.2.33”. You will need to uninstall mongodb npm by removing MongoDB Driver/ node_modules or etc , then install npm to install this version. This resolved the issue for me. Seems to be a bug or docs need to be updated.
mongoDB, connection refused
By default MongoDB only binds to the loopback interface which makes it only accessible from localhost. To change that you need to edit this line in mongod.conf file; you can change it to bind_ip = 127.0.0.1,192.168.1.102 to allow LAN and local connections or you can remove or comment out that line to allow all connections. For more info : MongoDB … Read more
MongoError: failed to connect to server [localhost:27017] on first connect
Update 2020 Feb 24: It would be wise to stay tuned with it. Here is the link for latest library instruction: https://docs.mongodb.com/manual/administration/install-community/ You haven’t started your monogo database. first install mongo install mongo as per your OS https://docs.mongodb.com/v3.0/tutorial/ then follow instructions mentioned on this site: https://docs.mongodb.com/v3.0/tutorial/getting-started-with-the-mongo-shell/ cd . mongod –dbpath “any directory path to start your database … Read more
Uninstall MongoDB on Mac OS X
When I try to run mongod from the terminal, I get the following error: 2014-07-02T23:56:24.797-0700 [initandlisten] ERROR: listen(): bind() failed errno:48 Address already in use for socket: 0.0.0.0:27017 2014-07-02T23:56:24.797-0700 [initandlisten] ERROR: addr already in use I recently realize that I have two versions of MongoDB on my Mac, and think this may be the source … Read more