irb(main):> Group.first.tasks.to_sql
Group Load (0.1ms) SELECT "groups".* FROM "groups" ORDER BY "groups"."id" ASC LIMIT ? [["LIMIT", 1]]
=> SELECT "tasks".* FROM "tasks"
INNER JOIN "projects"
ON "tasks"."project_id" = "projects"."id"
WHERE "projects"."group_id" = 1"