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21 Sep 2021
5 Practical Examples of Using ROWS BETWEEN in SQL
SQL window functions are tremendously useful for calculating complex aggregations like moving averages or running totals. The ROWS clause allows you to specify rows for your calculations, enabling even more sophisticated window frames. Here are five practical examples of leveraging the ROWS BETWEEN clause in SQL. Window functions (also called OVER functions) compute their result based on a sliding window frame (i.e. a set of rows). They are similar to aggregate functions in that you can calculate the average, total, or minimum/maximum value across a group of rows.
17 Sep 2021
How to Export a CSV File From a T-SQL Query
Knowing SQL queries to select data from databases allows you to obtain information easily. However, there are many situations in which we need to export data to another platform or application. The CSV file is a solution to this problem. In this article, you'll find out what a CSV file is and why you would want to use it. You'll also learn 5 methods for exporting data to a CSV file from an SQL Server database.
16 Sep 2021
How Developers Can Build SQL Skills
Even though you cannot build an application using SQL, employers continue to add SQL skills to their job requirements for software developers. In this article, I’ll elaborate on why developers need to know SQL and how you can learn SQL most efficiently. As a developer, you may work on different kinds of projects. Not all of your projects require doing string manipulation, but that doesn’t mean you don’t need to know how to do this.
15 Sep 2021
Top 10 Tools for Business Analytics
Business Analytics is one of today’s hottest career fields. However, success as a business analyst requires that you learn the right skills and software programs. Let’s see what tools you should know if you want to be a business analyst. With the world generating immense amounts of data – and having systems in place to capture and manipulate that data to fuel business growth – job opportunities for business analysts are only going to grow.
14 Sep 2021
How to Use Aliases with SQL JOINs
SQL aliases are custom names that you can give to the columns and tables you include in your queries. Aliases are very useful, as they can greatly improve the readability and maintainability of your query. We’ll be taking a closer look at using SQL aliases with JOIN and why you might need to do so. There are several types of aliases you can use in SQL: Aliases for tables.
13 Sep 2021
We Have Changed For You!
It's even better than before! LearnSQL.com doesn't just have a new awesome look. We've also been working very hard on the "behind the scenes" stuff, and have changed many functions on our platform to ensure that you have the best possible learning experience. The first glance at the new LearnSQL.com platform shows immediately that a lot has changed. It was very good before, but now it's awesome! We are very proud of our new look and hope that it will make learning SQL even more fun and effective.
10 Sep 2021
Frequently Asked Questions About SQL
Ten SQL questions that you should be able to answer if you’re applying for an SQL job. SQL is a vast topic and a source of endless questions from its users. However, some questions are asked more frequently – usually about concepts that most SQL users will need to know. It’s not surprising that interviewers tend to ask these same questions to SQL job candidates. Either way, knowing these questions is a first step to learning SQL.
9 Sep 2021
Top 5 SQL Audiobooks
No time to learn SQL? What if I said you could learn while sitting in traffic or washing dishes? It’s possible thanks to SQL Audiobooks. Check out which ones you should listen to. I have been recommending various SQL books for a long time. If selected well, they can be a great complement to the knowledge gained in interactive online courses. If you haven't read my article yet, check it out.
8 Sep 2021
How to Show Your Sql Experience
Do you want to work in the IT industry? This is now one of the best ideas for a good career. What should convince you to do so? Demand for specialists, high earnings, and the fact that it is a future-proof profession. Interestingly, it's not gonna be that hard – especially for you, smartie! You just need some skills and good preparation for an interview to be successful. I'll tell you how to land a great job!
7 Sep 2021
LearnSQL Track of the Season: SQL from A to Z
The ability to analyze data is one of the most sought-after skills in job applicants. Why? Because all organizations want to take advantage of the power of data. And one of the basic tools for that is SQL! See why we have chosen the SQL A to Z track as our track of the season. This fall, take your analytical skills to the next level! Let's start with the basics.