Learn SQL basics in just 15 minutes with this tutorial focused on using SQL with MySQL. Topics covered include: - What SQL is ...

This tutorial is about aggregate functions such as COUNT, SUM and AVG. An aggregate function takes many values and delivers just one value. For example the function SUM would aggregate the values 2, 4 ...

box_id is the primary key for this table. chest_id is a foreign key of the chests table. This table contains information about the boxes and the number of oranges and apples they contain. Each box may ...