To do this, you must specify certain criteria that hold true for the content you want to capture in your output file. There might be a situation where you are interested in exporting only a part of the data from your collection. The –host & –port options allow using either of the following ways to specify the values:, -h=Įxample query: mongoexport -host="" -port=27017 -collection=webinars-db=conduct-out=webinars.json įor more information on the mongoexport syntax and its various operations, you can look into the mongoexport manual. The –host option allows using either of the following ways to specify the value: or -h=Įxample query: mongoexport -host=":27017" -collection=webinars -db=conduct -out=webinars.json The –db command line option can’t be used directly with the –uri connection string. mongoexport -uri="mongodb://:27017/conduct" -collection=webinars -out=webinars.json This method requires specifying the database as a part of the string. The port and/or hostname can be specified in multiple ways: Step 2: Specifying Host And/Or Port Of The MongoDB Instance mongoexport -collection=webinars -db=conduct -out=webinars.jsonĪ) Specifying the collection that you want to export, can be done in two ways: -collection= or -c=ī) Specifying the output file that you want to export to, can similarly be done in two ways: -out= or -o=Ĭ) Specifying the database you will be exporting from is represented as : -db= or -d=Įxample mongoexport command: mongoexport -db db1 -c collection1 -out dataexport.json Step 2: Specifying Host And/Or Port Of The MongoDB InstanceĪ MongoDB instance running on port “27017”, doesn’t necessarily require a host or port to be specified.Įxample query: Here conduct is the database from which webinars collection is being exported.Step 1: Connecting To A MongoDB Instance.Mongoexport helps to export data in the desired format of your choice in two steps: The collection that has to be exported needs to be specified by the user along with an output file name. The mongoexport command runs directly on the system command line & it can be used in the following way: mongoexport -collection= Method 1: Exporting Data Using mongoexport The data is returned as a JSON file in all scenarios. The following steps will outline some of the common syntax options your command may take. You must enter the mongoexport command directly into the MongoDB command line to export your collection. A general idea of the JSON/CSV file structure.Having read access on the target MongoDB database.Installing MongoDB tools package in advance.The following are some prerequisites you should be familiar with before following this manual: For further information, you can look into the MongoDB Backup Methods - MongoDB Manual. Mongo-Estore and Mongodump are better alternatives for this use case. It is not advisable to use mongoexport for a full replication of your database as JSON can only preserve a part of the BSON data types and using mongoexport would not accurately capture your data in its entirety. The tools package must be installed well in advance so that the command-line can be accessed. Mongoexport is part of MongoDB’s tools package, which is available through the MongoDB Download Center. Mongoexport runs directly on the MongoDB command line and not on the Mongo Shell. Mongoexport is a command-line utility that is used to export data from a MongoDB instance in a CSV or JSON file format. These documents are stored in collections, analogous to how tables work in relational databases.īSON (Binary JSON) can be used to communicate with the data stored in MongoDB. MongoDB stores its data as objects which are commonly identified as documents. MongoDB is known for its scalability, ease of use, reliability & no compulsion for using a fixed schema among all stored documents, giving them the ability to have varying fields (columns). Introduction To MongoDB Image Source: MongoDB is a popular high-performance NoSQL database that enables you to store your data in a non-relational format. Through this article, you will get a deep understanding of the tools and techniques being mentioned & thus it will help you hone your skills further. It will further help you build a customized ETL pipeline for your organization. Upon a complete walkthrough of the content, you will able to carry out a successful data export to the data warehouse/any other destination of your choice for a fruitful analysis. This method is aimed at making the data export process as smooth as possible. It will help you take charge in a hassle-free way without compromising efficiency. Method 1: Exporting Data Using mongoexport.
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