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15 Best SQL Articles for Beginners Published in 2017

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For this post, I’ve gathered 15 of the most interesting SQL articles published in 2017. If you’re an SQL beginner and are interested in learning more about databases and SQL queries, or if you’d just like to expand your knowledge of SQL, this article is perfect for you. Let’s dive right in! Top 3 Vertabelo Academy articles I’ll start off the list with three of the most popular Vertabelo Academy articles. 1. “6 Ways You Can Learn SQL” by Aldo

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18 Most Important SQL Functions to Learn in 2018

Mastering the basics for a smooth start to SQL Learning a new programing language can seem intimidating. Like any other language, a programming language has a large vocabulary that you need to master. In this article, we’ll look at some of the most important SQL functions that you need to know. SQL is a rich language with many useful functions for working with different data types. Once you practice with some of the most important SQL functions, you’ll gain enough

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SQL Advent Challenge 2017: Get 25% OFF for Helping Santa (updated list of tasks)

Wanna be part of this year’s Christmas success? Santa needs your help organizing his Christmas deliveries. For this occasion, we’ve prepared a special Christmas database. While working on tasks, you’ll help Santa Claus deliver gifts to children. For this upcoming Christmas, we’ve prepared a 24-Day SQL Advent challenge. From now until Christmas Eve, we’ll publish daily SQL tasks for you to complete. If you’ve completed or recently started our SQL Basics course, or if you already have basic SQL knowledge,

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How to Draw a Christmas Tree in SQL

You can use SQL to manipulate all kinds of data, from huge analytical queries to brief single-purpose statements. But you can also use SQL just for fun, without any business requirements stifling your creativity. So, get out your jolly hat and prepare to sing O Christmas Tree as we create some quirky art with plain old SQL. Today, we’re going to generate some holiday-themed ASCII art, just for fun. That’s right. I said fun. This exercise has absolutely zero business

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18+ Best Online Resources for Learning SQL and Database Concepts (2018 revision)

We did it again! Each year, we review all SQL courses and tutorials on the market to help you find the best online resources to learn SQL. Find out which SQL courses are worth a try! But let’s get to the point and take a closer look at some of the best online resources that can help beginners get started with SQL. We’ll start with websites that focus on SQL syntax and basic SQL concepts. 1. Vertabelo Academy Vertabelo Academy offers

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High-Performance Statistical Queries: Dependencies Between Discrete Variables

In my previous article, we looked at how you can calculate linear dependencies between two continuous variables with covariance and correlation. Both methods use the means of the two variables in their calculations. However, mean values and other population moments make no sense for categorical (nominal) variables. For instance, if you denote “Clerical” as 1 and “Professional” as 2 for an occupation variable, what does the average of 1.5 signify? You have to find another test for dependencies—a test that

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