Esat Erkec
We need to use IS NULL or IS NOT NULL syntax when we compare the NULL values in a table

5 Best Practices for writing SQL queries

December 30, 2022 by

In this article, we are going to learn some best practices that help to write more efficient SQL queries.

Introduction

Queries are used to communicate with the databases and perform the database operations. Such as, we use the queries to update data on a database or retrieve data from the database. Because of these functions of queries, they are used extensively by people who also interact with databases. In addition to performing accurate database operations, a query also needs to be performance, fast and readable. At least knowing some practices when we write a query will help fulfill these criteria and improve the writing of more efficient queries.

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Manvendra Singh
Difference between SQL and MySQL

Understanding the difference between SQL and MySQL

December 26, 2022 by

This article will explain the difference between SQL and MySQL. Many people get confused between several database terms like SQL, MySQL, SQL Server, or other SQL-related phrases. If you are a database professional, then you should be aware of the difference between SQL and MySQL or other phrases which have SQL words included like PostgreSQL, Cloud SQL, TSQL, etc. Most of these terms are divided between a query language and database software like TSQL and SQL are query languages whereas MySQL, SQL Server, and PostgreSQL are database software.

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Daniel Calbimonte
SSMS

SQL Server Tutorial

December 23, 2022 by

This article is a SQL Server Tutorial. If you want to learn how to install and start with SQL Server from 0, this is the place to start. We will teach you to install SQL Server, start your first queries, and explain the basics to start with SQL Server Integration Services (SSIS), SQL Server Reporting Services (SSRS), SQL Server Analysis Services (SSAS), Data Quality Services (DQS), Master Data Services (MDS) and Azure and more.

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Manvendra Singh
Use SUM with other system functions and GROUP BY statement

Understanding the SQL SUM() function and its use cases

December 13, 2022 by

Today, I will describe the SQL SUM () function along with its use cases in this article. There are various mathematical calculations we need to do in day-to-day business requirements. SQL Server offers various system functions which I have listed below to get these mathematical calculations easily by using them. One such requirement is to get the sum of values stored in a numeric column. We can use SQL Server system function SUM () to easily get the sum of the values stored in a numeric column of the table.

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Manvendra Singh
New Cosmos DB account dashboard

How to configure Continuous backup for Azure Cosmos DB account

November 14, 2022 by

This article will explore Continuous backup and steps to configure it for a new Azure Cosmos DB account or an existing Cosmos DB account. Azure Cosmos DB is a fully managed and highly secure, NoSQL database service on the Azure cloud that is designed for modern-day application development. It automatically runs backup for its databases on separate Azure blob storage at regular intervals without affecting the performance, availability, and provisioned resource units (RUs) to ensure data protection from a data recovery standpoint which can be needed in case of data corruption, deletion, or wrongly data updates.

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Daniel Calbimonte
Get age in SQL Server based on bithdate

SQL Subtract dates

November 7, 2022 by

In this article, we will show how to subtract dates using SQL Server. This article will be a learn-by-example article with a problem and a solution. But first, I will add some theory to understand the syntax of the DATEDIFF function which is the base of this article.

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Manvendra Singh
Enable Global data distribution

Enable Global Distribution to replicate data across regions in Azure Cosmos DB

November 2, 2022 by

This article will explain about Global Distribution feature of Azure Cosmos DB and how to enable it to distribute data across regions. Azure Cosmos DB is developed to address modern application requirements in this digital era. There are different requirements to run web-based or online internet-facing applications smoothly. You need to cater enormous amount of data that can generate with very high velocity and this will cause huge numbers of read and write operations on the database. Your database needs to be responsive and quickly show the updated details for other customers. You might also need to address autoscale which will be used to address unpredictable workload during any discount offer, or festive seasons. These modern days applications must also develop in a way so that if you need to add another location to expand your business to the different regions so you don’t need to do many changes and it could be easily adjusted to expand the application for other regions.

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