If there is a way to get to the last nesting without join?

Question

MySQL

There are 4 tables: customer->area->project->event. Id in customer is known. Is there a better way to get to event without join.

Answer 1

There are exactly 2 options:
a) you make one query with join
b) you make 4 queries in turn to each of the tables.
Usually option A is better.