db.teams.find({}); Output: Use the Projection Method to Select Single or Multiple Fields for All Documents in a MongoDB Collection A projection can explicitly include several fields. Thefind()method will return all the pages that match the query in the following operation. ...
MongoDB find syntax is pretty simple. Lets have a collection namedusersand find all the documents in the collection, // Querydb.users.find({})// Result;[{email:'one@email.com',name:'One for like and comment',},{name:'Two for Comments',},{email:'three@email.com',name:'Three for...
To remove all documents in a MongoDB collection (from the command line) use the remove function, and give it an empty set of parentheses, like this: // remove all documents in the "stickynotes" collection db.stickynotes.remove({}) You can do the same thing from your Java, Scala, Ru...
The “find()” method of MongoDB displays all the documents in a non-structured way; the syntax of this method is written below: db.[name-of-collection].find() The “name-of-collection” refers to the collection name from where the document will be retrieved; For instance, the following...
How can I rename a field for all documents in MongoDB - The syntax is as follows to rename a field for all documents. Here, we have used $renameLdb.yourCollectionName.update({}, {$rename:{yourOldFieldName:yourNewFieldName}}, false, true);To understand th
We need to use sort() method to sort documents in MongoDB , it accepts a document field along with their sorting order. To specify sorting order 1 and -1...
db.student.find( { name: ["Rohit", "Gupta"] } ) Explanation This very simple example of find in the array, here we need to find the first and last name of a student by using the find () method. In this example, we inserted documents in an array format as shown. Here we need ...
3) findOne – This method is used to find single documents from collections. Using this method we also find all collection fields in MongoDB. 4) schematodo – This is used to display the schema structure of database collection in MongoDB. Using schematodo we can display all fields from co...
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To perform the $count operation on the fields of a database collection in MongoDB, we need to have numerous records. Therefore, we created a collection named “Test” and inserted 12 records into it simultaneously using the insertMany() function. Now, the records of this “Test” collection...