Learn SQL articles

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL has been a cornerstone of data management and more importantly, data extraction for over 40 years. Structured Query Language, or SQL, is a powerful tool you can learn to use proficiently in a short amount of time and ace your […]

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In the dynamic world of data and technology, Structured Query Language (SQL) plays a critical role. This blog post aims to help you move from theory to practical application by providing real-world SQL scenarios and code examples. What is SQL? SQL

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Structured Query Language (SQL) is a standard programming language for managing data held in a relational database management system (RDBMS). It’s used to perform operations on the database such as inserting, deleting, updating and retrieving data. In this blog post, we

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> If you are venturing into the world of SQL, one thing you inevitably will come across are SQL Joins. They are integral to combining data from two or more tables based on related columns between them. In this blog post, we

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Are you new to SQL Server? Don’t worry! This blog post will provide you with some essential tips and examples of SQL code for beginners that can help you get started with SQL Server. Understanding SQL Server SQL Server is a

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In the realm of relational databases, SQL is a powerful language used by programmers and data analysts to interact with the data. Among the arsenal of SQL commands and functionalities, understanding how to group data can help in providing summary information

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Introduction In SQL, tables are mutable which means they can be altered after creation. We usually find ourselves in situations where we need to add more data to a table, which ideally should fit in a new column. This post aims

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In this tutorial we will highlight how to make a calculated average age query in a database using SQL. For this tutorial, we suppose we are dealing with a table named ‘Customers’, which has a column of birthdates named ‘BirthDate’. Calculate

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Welcome to the exciting world of SQL! SQL, or Structured Query Language, is a language designed to allow both technical and non-technical users query, manipulate, and transform data from a relational database. And due to its simplicity, SQL databases provide safe

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Welcome back to our ongoing series on SQL programming. In this edition, we’re going to cover HAVING, a clause in SQL that allows you to filter aggregated data. Let’s start by understanding why we need to use HAVING clause in SQL.