Whether you’re just getting in to programming or you’ve avoided learning SQL, it’s something every developer faces eventually. You may not be responsible for building and maintaining a database, but ...

There is a beginner to advanced SQL course for those preparing for a profession in data (as a data analyst, data scientist, or data engineer). This course offers you an ultimate learning experience ...

A step-by-step introduction to SQL, covering everything from basic commands to advanced techniques. Each code snippet is explained and interpreted, making it easy to understand the concepts and apply ...

Learn how to master the SELECT statement to form truly useful data queries. This article explains functions, clauses, and keywords that will make your life a lot easier. Due to popular demand, we’re ...

Shelley Doll finishes her coverage of SQL data types with an overview of datetime and interval data types. Learn more about the basic syntax of these standard SQL types. Datetimes and intervals are ...

Assuring optimal performance of database applications starts with coding properly formulated SQL. Poorly written SQL and application code is the cause of most performance problems. As much as 75% of ...

A relatively new concept in the world of database systems is the NoSQL DBMS. What is NoSQL? Well, I bet you guessed that it doesn’t use SQL, right? I mean, it is sort of right there in the name. But ...