day : 03/09/2018 1 result

Relational Algebra and TeamSQL – Part II

Sometimes is good to dive into the foundations of something, to find new elements to add more power to our current skills. This article is the second part of the previous week Relational Algebra article. In Relational Algebra, there are several data operations, and almost all of them have a simple SQL statement representing the same process. However, there is one Algebra Relational operator that is not simple to express in SQL: The division operator. In this article, we will cover the division ...