Removing mongod.lock inside /var/lib/mongodb sudo rm /var/lib/mongodb/mongod.lock And then restarting the service should do it. For example, in my Ubuntu installation, restarting the server is something like this: sudo service mongodb start
I use pymongo 2.4.1. from bson.objectid import ObjectId [i for i in dbm.neo_nodes.find({“_id”: ObjectId(obj_id_to_find)})]
From the docs: The $not operator does not support operations with the $regex operator. Instead use // or in your driver interfaces, use your language’s regular expression capability to create regular expression objects. Consider the following example which uses the pattern match expression //: db.inventory.find( { item: { $not: /^p.*/ } } ) EDIT (@idbentley): … Read more
Dates are stored in their timestamp format. If you want everything that belongs to a specific month, query for the start and the end of the month. var start = new Date(2010, 11, 1); var end = new Date(2010, 11, 30); db.posts.find({created_on: {$gte: start, $lt: end}}); //taken from http://cookbook.mongodb.org/patterns/date_range/
Normally this caused because you didn’t start mongod process before you try starting mongo shell. Start mongod server mongod Open another terminal window Start mongo shell mongo
pymongo might give you a hand, followings are some codes I’m using: import pandas as pd from pymongo import MongoClient def _connect_mongo(host, port, username, password, db): “”” A util for making a connection to mongo “”” if username and password: mongo_uri = ‘mongodb://%s:%s@%s:%s/%s’ % (username, password, host, port, db) conn = MongoClient(mongo_uri) else: conn = … Read more
If you want to include regular expression options (such as ignore case), try this: import re regx = re.compile(“^foo”, re.IGNORECASE) db.users.find_one({“files”: regx})
You can qualify your update with a query object that prevents the update if the name is already present in profile_set. In the shell: db.coll.update( {_id: id, ‘profile_set.name’: {$ne: ‘nick’}}, {$push: {profile_set: {‘name’: ‘nick’, ‘options’: 2}}}) So this will only perform the $push for a doc with a matching _id and where there isn’t a … Read more