artemrogov · June 23, 2018 16:04
diff --git a/having.sql b/having.sql
 select first_name, last_name, second_name, count(*)
 from customers
 group by first_name,last_name, second_name
 having count(*) < 2
 order by first_name, last_name, second_name;
	select first_name, last_name, second_name, count(*)
	from customers
	group by first_name,last_name, second_name
	having count(*) < 2
	order by first_name, last_name, second_name;