MySQL introduced Window functions in their release of MySQL version 8.0. to target groups of rows without collapsing them. In this article, we will explore example implementations of the most versatile window functions MySQL has to offer.
As developers, we are aware of various best practices for SQL query optimization. While a few of these are specific to individual relational database management systems (RDBMSs), most can apply to virtually any database.
NewSQL was supposed to combine the best of SQL and NoSQL databases. 10 years after its inception, we are left wondering why it never saw broad adoption. What led to this failure? Lack of specialization and the cloud.
Using SQLite and Arctype visualizations to explore a US Bureau of Labor Statistics dataset with the goal of learning more about the gender wage gap.
Postgres offers set operators that make it easy to query and filter the results of searches from your database. Set operators are used to join the results of two or more SELECT statements.
You should not try to prevent NULL values - instead, write your query in a way to overcome its limitations.
SQL has transformed itself from a specialized skill to a core requirement for all data related jobs. What can be done to educate even more professionals in this basic proficiency? We’ll need to rethink how querying is perceived by and taught to the public.
We've all seen the dreaded error... SQL: Invalid syntax near ")". In this article, I cover some of common culprits I've seen for this error and others.
The relational data model was introduced in 1970 and has dominated for 50 years. What led to its success? Building on first principles and Bushnell's law.
