_from_ is kind of one of the most important context about the data being returned. It provides the type information. Columns you select are just properties of t

_from_ is kind of one of the most important context about the data being returned. It provides the type information. Columns you select are just properties of that type. In SQL, where _from_ is placed at the end, we are essentially writing equivalent of 'property.object'; eg.: name.person, age.person