Tag: SQL

10 Exciting SQL Project Ideas for Beginners (2022)

To demonstrate your SQL skills to your future or current employers, you need to create your own projects. This is how you will learn to apply your knowledge in real-world scenarios. So, let’s look at 10 cool SQL projects that you can do right now. Most of them are beginner-friendly, but the last projects in […]

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SQL Operators: 6 Different Types (w/ 45 Code Examples)

This article will cover what SQL operators are, the various types of operators, and many different code examples of how they’re used. As with any new skill, people prefer to learn in different ways. If learning by reading blog articles isn’t your cup of tea, you may enjor our interactive SQL courses. Try them for […]

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Are SQL Certifications Worth It? (We Asked 15 Hiring Managers)

Want to work in data? Then you might be wondering: Do I need a SQL certification to qualify for a data job?  The answer to this question can be confusing. To start, various SQL certification programs will make it seem like having a certificate is paramount to getting a data job. Also, some “experts” will […]

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Why Learn SQL in 2022 (Analyzing Real Job Data)

Learning SQL might not be as “sexy” as learning Python or R, but it’s a fundamental skill for almost every data scientist and data analyst job. Here’s why.

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SQL Subqueries: A Beginner’s Guide (with Code Examples)

Every data scientist needs to know their way around a SQL database, including subqueries. Here’s an introduction. In this article, we’ll cover the basics of SQL subqueries, their syntax, how they can be useful, and when and how to use them when querying a database. This article assumes that you have some basic knowledge about […]

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Learner Spotlight – Ashray Adappa

Ashray started his professional journey in chemical engineering, but when he felt like he had lost his way, he discovered data science, taught himself on the Dataquest platform, and landed a job as a data analysis consultant. This is the story of how he decided to change his life, step by step. 1. First, what […]

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Learner Spotlight – Otavio Silveira

Meet Otavio Silveira, an economics graduate who discovered Python and data science when trying to learn Python and SQL on YouTube to improve his chances of landing his first job in data. He joined Dataquest and later won a scholarship which he used to complete his learning path. Here’s his story… 1. First, what are […]

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Learner Spotlight – Rahila Hashim

Meet Rahil Hashim, a zoology graduate with no prior experience in programming who enrolled in Dataquest’s SQL path after winning one of our scholarships. Keep reading to find out how Rahila took advantage of Dataquest’s courses to land a job as a technical data scientist. 1. First, what are your preferred pronouns? She/her 2. All […]

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Why does SQL Server Consume So Much Memory

According to the company, Microsoft SQL Server is a relational database management system (RDBMS). In relational databases, all SQL Servers use the SQL programming language, which is well-known and widely used. Microsoft created SQL Server’s Transact-SQL implementation, also referred to as T-SQL, used by SQL Server. A number of programming constructs not found in SQL […]

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Learner Spotlight – Viktoria Jorayeva

Meet Viktoria Jorayeva, a Ukrainian student who made the transition from philology to data science in just a few months with Dataquest. As a person from a non-technical, non-mathematical background, breaking into the field of data science was possible thanks to Dataquest’s data science career path. Her story is a true inspiration to learners around […]

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How Long Does It Take to Learn SQL?

How long does it take to learn SQL? It depends on your goals and your background, so we’ve broken down a variety of scenarios for you.

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SQL vs T-SQL: Understanding the Differences

SQL or T-SQL — which one do you need to learn? SQL ​and T-SQL both see heavy use in the database and data science industries. But what exactly are they? These two query languages are very similar, both in name and in what they can do, so the distinction between them can be difficult to […]

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The Best Way to Learn SQL (According to Seasoned Devs)

What’s the best way to learn SQL? With all of the resources available, learning SQL the “right way” can be difficult. Finding the best way to learn SQL is tricky because everyone learns things differently. But, after training tens of thousands of students — seeing what works and what doesn’t — we’ve come up with […]

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SQL vs MySQL: A Simple Guide to the Differences

SQL and MySQL are important tools for working with data. But what are they, exactly, and how are they different? Let’s clear that up.

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SQL Interview Questions — Real Questions to Prep for Your Job Interview

A lot of the SQL interview questions you’ll find on the web are generic: “What is SQL?” You’ll never be asked that. We’ve got real questions to help you prep.

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