Newin version1.2. maxTimeMS integer The cumulative time limit in milliseconds for processing operations on the cursor. MongoDB aborts the operation at the earliest followinginterrupt point. min array|object The
In this article, we’ve learned to perform thefindoperation in MongoDB using various methods. We performedfindto retrieve specific documents that match selection criteria using the query operators. In addition, we also learned to perform aprojectionto determine which fields are returned in the matchi...
Retrieve Specific Fields in Collection Open Live Script Connect to MongoDB® using the MongoDB C++ interface and retrieve all documents in a collection. Specify the fields to retrieve for each document. Import the documents into MATLAB®. In this example, each document in the collection represe...
Projection that explicitly excludes the _id field from returned documents and explicitly includes only the title and imdb object (and its embedded fields). JavaScript TypeScript import { MongoClient } from "mongodb"; // Replace the uri string with your MongoDB deployment's connection string. con...
db.bios.find({contribs:'OOP'},{'name.first':0,birth:0}) Explicitly Exclude the_idField¶ 下面这个操作会在查询结果中排除_id和qty字段: db.products.find({qty:{$gt:25}},{_id:0,qty:0}) The documents in the result set contain all fieldsexceptthe_idandqtyfields: ...
To return all fields in the matching document, omit this field. 如果投影参数不是文档,则操作会出错。 sort 文档 Optional. Specifies a sorting order for the documents matched by the筛选器. 如果sort 参数不是文档,则操作错误。 请参阅cursor.sort()。
collection ="employees"; mongoquery ="{""department_id"":80}"; Create the sort query as a string scalar that contains a JSON-style string. Sort the documents by the salary field. sortquery ="{""salary"":1.0}"; Retrieve all documents in the MongoDB query on theemployeescollection by ...
Example: Find documents including and excluding specific field The following example will retrieve all the documents from the collection restaurants including the field borough and cuisine and excluding the field _id which satisfy the criteria, that is coord is more than 100. ...
for exampledb.customers.find({"firstname": <String>}), and generates a hash for the query shape. MongoDB writes the hash values to the queryHash field in thesystem.profilecollection. In the Query Profiler, you can see the hash value in theQuery hashcolumn when you group byQuery shape....
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