Data Science Educational Resources
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SQL
What Are the Steps to Cast INT in SQL for Type Conversion?
Cast INT in SQL is a must-know for anyone even remotely interested in data handling and analysis. This article will cover all the important cast INT topics.
Nathan Rosidi -
How to Use SQL Wildcards for Flexible Data Queries
This article is all about uncertainty and using it to add flexibility to SQL queries. How do you do that? Start using one of the five SQL wildcards regularly.Nathan Rosidi -
How Does SQL Date Formatting Work?
In this article, we explore the SQL date format. We’ll deal with how standard and custom date formatting work in four of the most popular SQL flavors.Nathan Rosidi -
Simplifying SQL Queries with Aliases: A How-To Guide
SQL aliases are a simple yet efficient way of simplifying your SQL queries. In this guide, we’ll show you all the benefits and provide examples of their use.Nathan Rosidi -
Data Type Conversion in SQL: A Closer Look at CAST Function
Casting data types in SQL allows you to change data types according to your needs. This article discusses this essential skill for data professionals.Nathan Rosidi -
SELECT UNIQUE in SQL: Mastering Data Retrieval with DISTINCT
What is SELECT UNIQUE in SQL? What about SELECT DISTINCT? How do you retrieve unique data? We will answer these three and more questions in this article.Nathan Rosidi -
A Detailed Comparison Between Inner Join vs. Outer Joins
In this article, we compare inner join vs. outer join. We will talk about their similarities and differences and show you how to use them in practice.Nathan Rosidi -
Top 15 SQL Server DBA Interview Questions
Today, we show you SQL Server DBA Interview Questions and how to answer them. There are five non-coding and coding questions in each topic category.Nathan Rosidi -
SQL ROW_NUMBER() Function: Syntax and Applications
How to add SQL ROW_NUMBER() to your data handling and analysis tools? We’ll help you by explaining its workings, its syntax, and how to use it in examples.Nathan Rosidi -
MS SQL vs MySQL: Similarities and Differences
Facing the choice of MS SQL vs MySQL? Here’s a guide through the similarities and differences of these two popular database systems.Nathan Rosidi -
Understanding SQL's INTERSECT Command
What is INTERSECT in SQL? How does it work? When to use it? How to write an INTERSECT query? You can find all these questions answered in this article.Nathan Rosidi -
An In-Depth Guide to SQL SELECT DISTINCT Statement
SQL SELECT DISTINCT is a powerful statement for removing duplicates from your data. Learn how to use it in different scenarios and what its alternatives are.Nathan Rosidi -