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The following article provides an overview of MongoDB find by Id() method. MongoDB provides a find by Id() function which can retrieve documents matching a user id. To use search by Id() in MongoDB, you need to use the find() function. If n...

This article will cover the various ways to add to an array in MongoDB. Adding to an array in MongoDB Use the $push operator to add values ​​to an array The $push operator is one of the various array update operators provided by MongoDB...

This article will discuss how to use pretty printing in MongoDB to display formatted results. Pretty printing in MongoDB A cursor is an object that allows programmers in the Mongo world to iterate over documents in a Mongo collection. Altho...

This article discusses operators in MongoDB, aggregation operators, and different ways to calculate the total number of records. Operations in MongoDB CRUD operations are a user interface concept that allows users to browse, search, and cha...

This article explains the operators in MongoDB. What is the purpose of $push and $addToSet operators. Furthermore, the difference between these two operators is given in the code snippet. This article discusses the following topics. Operato...

With the help of this article, you will learn how to use $set the operator to partially update objects in MongoDB so that the new object overlaps/merges with the existing object. The $set operator replaces the value of a field with a given...

This article will discuss how the $ne operator works in MongoDB. In addition, we will list its differences from the $not operator. $ne operator in MongoDB $ne is an operator in MongoDB that stands for not equal to. This will compare the val...

Remote connectivity is required when we work in a distributed environment. This tutorial is a step-by-step guide on how to connect to a remote MySQL database using the command line. Connect to a remote MySQL database using the command line...

In this article, we will learn about schema and database and the basic difference between them. schema and database are two of the most important terms in Database Management Systems (DBMS). Every organization, school, college and other ins...

Today's topic is about duplicating rows in MySQL database. We will learn how to copy a row and paste it into the same table with auto increment ID and custom ID. We will also see how to copy multiple fields from multiple rows of one table a...

As a database administrator, there are certain situations and circumstances where you have to search the entire database for the occurrence of a pattern or a string. For example, how many employees use Gmail accounts in your office, or you...

Creating a copy of an existing database is known as the MySQL Clone method. Cloning involves creating a copy of the table structure, constraints, functions, procedures, triggers, and all functionality associated with the table in one go. Th...

Sometimes, you have to select first N rows of MySQL database according to your project requirements. n The value of varies according to the requirement; it can be TOP 1 row or TOP 30 rows. We will learn how to select top N rows using the cl...

In this tutorial, we aim to explore how to display foreign keys for tables and columns in MySQL. The type of key that references a primary key, also known as the primary key of another table, is called a foreign key. Understanding the forei...

In this article, we will learn how to terminate a PostgreSQL session. Any open connections are run by background processes or tasks, PSQL which may no longer exist despite exiting the user interface or command line tool. Use ps -ef or grep...