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In SQL, performing division operation sometimes leads to errors when divided by zero . This error is " divide by zero " which can disrupt your query execution . To avoid this situation, we can use the following methods: Use NULL IF function Use CASE statement Use SET ARITHABORT OFF Use WHERE Now we will discuss these methods one by one with the help of examples. Use NULLIF function In this method , if both the arguments are ... Read More
A square is a four-sided polygon with all sides equal and all angles equal to 90 degrees. In computational geometry, determining whether four given points form a square is a common problem. In this article, we will discuss multiple approaches to check whether four given points in a 2D plane form a square using C++. When can a four-sided polygon be called a Square? If we are given four points, we have to determine whether it is a square or not. To determine if four points (A, B, C, D) form a square, the given conditions below must be satisfied: ... Read More
The area of a circle is a fundamental mathematical concept that can be easily calculated using a simple formula. In C++, there are multiple ways to find the area of a circle. In this article, we are going to discuss various approaches to calculating the area of a circle in C++. How to Find the Area of a Circle? The formula for finding the area of a circle with a given radius r is: Area = π × r × r Example 1 Input: r = 5 Output: 78.54 Explanation: ... Read More
Google Fonts is a widely used library of open-source web fonts that provides a vast collection of typefaces to enhance the visual appeal of web applications. It allows developers to easily integrate high-quality fonts into their React applications. In this React Google Fonts article, we will cover three different methods to add custom fonts (Google font) to your React application. Before adding custom fonts to your project, you should be familiar with the following concepts: NPM & Node.js, React.js, and Styled Components. Why Use Google Fonts? Google Fonts offers several benefits: Wide ... Read More
When handling HTTP POST requests in Java using Servlets, you may need to extract the request body from the HttpServletRequest object. This is useful when dealing with raw JSON data, form submissions, or XML payloads. Extracting Request Body from HttpServletRequest The HttpServletRequest object provides an InputStream from which you can read the request body. You can use getReader() or getInputStream(), depending on your needs. Using BufferedReader (getReader) The getReader() method returns a BufferedReader that allows you to read the request body as text. import java.io.BufferedReader; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @WebServlet("/postHandler") public ... Read More
Deploying a Golang application directly across different environments can be very complex and inconsistent. Other problems include managing dependencies, configuring for different operating systems, and environmental differences. Dockerizing the application makes it easier to guarantee that it will run correctly in any environment by packaging it and its dependencies into a container. Prerequisites Before you start, make sure you have the following installed: Golang (latest stable version) Docker (Docker Desktop or CLI) Basic knowledge of Golang and Docker Approaches to Dockerizing a Golang Application There ... Read More
MySQL is a relational database based on Structured Query Language used to access and manage records in a database. MySQL is based on a client-server architecture that follows a request-response cycle. Clients make requests through GUI or command prompt using MySQL. Fixing Errors in MySQL Server Here are the steps to connect to the MySQL Server using VS Code - Open Visual Studio code. Go To -> extensions, search MySQL Open the extension called MySQL management tool and install it. Click on the ... Read More
When designing a MySQL database, selecting the right numeric data type is crucial for balancing precision, storage efficiency, and performance. Decimal, Double, and Float are three common numeric types, each serving distinct purposes. While Decimal offers exact precision for financial data, Float and Double handle approximate values for scientific calculations. This article explores their differences, use cases, and practical examples to help you make informed decisions. What is Decimal Decimal (or DECIMAL(M, D)) is a fixed-point data type designed for precise arithmetic, such as financial calculations. It stores exact numeric values with a specified precision (M = total ... Read More
The sum of the first N even numbers is a mathematical operation. In this operation, we add up the firstN even numbers. In Python, there are multiple ways to calculate this sum. In this article, we are going to learn and discuss various approaches to finding the sum of the first N even numbers in Python. Finding the Sum of the First N Even Numbers The formula for finding the sum of the first N even numbers is: Sum = N * (N + 1) Example 1Let's look at a scenario where N=5, The first 5 even numbers ... Read More
In a SQL Server database, slow-running queries can severely impact performance, leading to delays, timeouts, and increased server load. Identifying and optimizing these queries is crucial to ensuring a smooth and efficient database operation. Common reasons for slow queries include missing indexes, inefficient joins, high I/O operations, outdated statistics, and parameter sniffing issues. Prerequisites Before identifying slow queries, ensure you have the necessary access and tools: Database Administrator (DBA) Privileges − You need appropriate permissions to run diagnostic queries. SQL Server Management Studio (SSMS) − This tool provides execution plans ... Read More