Introduction Grain consumption has increased significantly in recent years. According to the Food and Agriculture Organization of the United Nations (FAO), in 2014 alone, 2.9 billion tonnes of the world's main cereals produced in increased yields were harvested: corn, rice, wheat, soybean and barley [1]. Thus, the need to
Prologue For the first week of development, it wasn't clear what we wanted to do (and probably shouldn't have been), which made it difficult to dive into the project. (Personally, it was a surprise to me that this project had already started weeks or even a month ago, even though
I've been studying a join algorithm based on a semi join. In order for it to be used by the postgres optimizer, we just need to filter one table based on data from another. Classic subquery in a condition. So here we go SELECT * FROM flight WHERE flight_id NOT