MongoDB

How-tos How to Query With Multiple Conditions in MongoDB This instructional post will tell you which operators can be used to find and query multiple documents on multiple conditions in MongoDB. $and and $or operators are described … ↗ How-tos How to Log All Queries in MongoDB This instructional post will teach you about logging in MongoDB. Furthermore, the operators used for logging queries in MongoDB are briefly discussed. ↗ How-tos How to Locally Connect to a MongoDB Database Using Python In this Python MongoDB tutorial, you will learn the basics of PyMongo, how to connect a MongoDB database locally using Python, and perform some simple database operations. ↗ How-tos How to Insert Records if Not Exists in MongoDB This instructional post will tell you how to insert records in fields of array in collections of database if they don't exist. Moreover, Upsert and $setOninsert are also explained … ↗ How-tos How to Import a JSON File Into MongoDB This instructional post will tell you different ways to import collections in MongoDB. Moreover, importing to JSON, CSV, and TSV formats is described briefly. ↗ How-tos How to Have Unique Index in MongoDB In this instructional post you will learn about the unique indexes, what they are and how to make indexes unique in MongoDB. Moreover, making user's email unique in MongoDB is also … ↗ How-tos How to Find Objects Between Two Dates in MongoDB This MongoDB lesson will show you how to query with a Date Range, how to return a query based on a Date, and how to compare two dates in MongoDB. Also covered are the commands … ↗ How-tos How to Drop or Delete a Collection in a MongoDB Database This article will tell you how to delete collections in MongoDB database and what are different methods to delete collections in MongoDB. db.collection.remove and … ↗ How-tos How to Define a Schema in MongoDB The structure and contents of your data are defined by a schema, which is a JSON object. Realm's BSON schemas, which extend the JSON Schema standard, can be used to design your … ↗ How-tos How to Count Records in MongoDB This tutorial will tell you what are operations in MongoDB and what is the use of aggregate operation in MongoDB. Then how to get total records count in MongoDB will be discussed … ↗ How-tos How to Copy/Clone a Database in MongoDB There are several ways through which the user can clone a collection within the same or to a different MongoDB database. In this MongoDB tutorial article, you will learn about … ↗ How-tos How to Add New Field to Every Document in a MongoDB Collection You will learn about the $set and $setOnInsert operations in this article post. Furthermore, utilizing these two operators, the challenge of adding a field to a collection in … ↗ How-tos How to Join Multiple Conditions Using the Lookup Operator in MongoDB This tutorial demonstrates how we can join multiple conditions using the lookup operator in MongoDB. ↗ How-tos How to Get the Size of a Database in MongoDB This tutorial demonstrates how to get the size of a database in MongoDB. ↗ How-tos How to Copy a Collection Within the Same Database in MongoDB This tutorial demonstrates how to copy a collection within the same database using the mongodump, monogrestore, aggregate function, and forEach loop. ↗ How-tos How to Combine Two Collections Into One Collection Using MongoDB This tutorial demonstrates how to combine or join two collections into one collection using MongoDB. ↗ How-tos How to Repair MongoDB Database This tutorial educates about various problems and their solutions to repair a database in MongoDB. ↗ How-tos How to Get the Last N Records in MongoDB This tutorial demonstrates how to get the last N records in MongoDB. We will also see how to retrieve the N number of documents without sorting. ↗ How-tos How to Use Pipeline in Lookup Operator in MongoDB This tutorial demonstrates how to use pipeline in lookup operator in MongoDB. ↗ How-tos How to Use of $Match (Aggregation) Stage in MongoDB This tutorial demonstrates the use of $match (aggregation) stage in MongoDB. ↗ How-tos How to Print JSON Without Whitespaces in MongoDB This tutorial demonstrates how to print JSON without whitespaces in MongoDB. ↗ How-tos How to Show Indexes in MongoDB This tutorial demonstrates how to show indexes in MongoDB using one/multiple collection and database. ↗ How-tos How to Use forEach() to Update an Array Field in MongoDB Shell This tutorial demonstrates the how to use forEach() to update an array field in MongoDB shell. ↗ How-tos How to Bulk Update of Documents in MongoDB Using Java This tutorial demonstrates how to perform bulk update of documents in MongoDB using Java. ↗