Kumar Saurabh 
In this MongoDB tutorial, we are going to discuss how to compare two fields in MongoDB. We will cover this topic with different operations and examples. These are the following topics that we are going to cover in this tutorial: MongoDB compare two fields query MongoDB compare two fields equal MongoDB compare two fields not equal MongoDB … Read more >>
In this PostgreSQL tutorial, we will learn about “Postgresql regexp_replace” and cover the following topics. Postgresql regexp_replace In Postgresql, the REGEXP_REPLACE function replaces substrings that match a POSIX regular expression with a new substring. The syntax of regexp_replace is given below. Where the source is a string where the replacement will take. pattern: The pattern … Read more >>
In this MongoDB tutorial, we will learn how to change the collection name in MongoDB. We will cover this topic with different operations and examples. These are the following topics that we are going to cover in this tutorial: Change the collection name in the MongoDB In MongoDB, you can use the renameCollection() method to rename … Read more >>
In this MongoDB tutorial, we will learn how to find the last inserted document in MongoDB. These are some of the topics that we are going to cover in this tutorial: MongoDB find last inserted document query When we have a large dataset and we want to find the last inserted document of the collection. For that, we … Read more >>
In this MongoDB tutorial, we are going to discuss “MongoDB find string contains”. We will also cover this topic with different operations and examples. These are the following topics that we are going to cover in this tutorial: MongoDB find query contains a string In MongoDB, we can use the $regex operator to find a query … Read more >>
In this MongoDB tutorial, we will learn how to find multiple values in MongoDB. We will also cover this with different examples. These are some of the topics that we are going to cover in this tutorial: How to find multiple values in MongoDB MongoDB provides the find() that is used to find multiple values or … Read more >>
In this MongoDB tutorial, we are going to discuss “MongoDB text search partial words”. We will also cover this with different operations and examples. These are the following topics that we are going to cover in this tutorial: MongoDB text search partial words In MongoDB, we can search the text by using the $text query operator … Read more >>
In this MongoDB tutorial, we are going to discuss “MongoDB remove a field from the document”. We will also cover this with different operations and examples. These are the following topics that we are going to cover in this tutorial: How to remove a field from the documents in MongoDB MongoDB remove fields from the document … Read more >>
In this MongoDB tutorial, I will explain how I managed to resolve the error “Missing before statement MongoDB”. We will also cover multiple examples to understand the reason behind getting errors and resolve the error. Don’t worry if you don’t know how to resolve these issues. In the below steps, we will discuss the reason for getting … Read more >>
In this MongoDB tutorial, I will explain how I managed to resolve the error “E: Sub-process /usr/bin/dpkg returned an error code (1)”. Sub-process /usr/bin/dpkg returned an error code (1) Recently, when I was trying to install the MongoDB database in the ubuntu operating system (20.04), I faced the error “Sub-process /usr/bin/dpkg returned an error code (1)“. You can … Read more >>