Greetings comrades, please help make the following request: Output all sellers who have sold more in a month than seller “Ivanov”. Data available only for one month. 
Tried to do something: it turned out like this and error 1111:
SELECT l_name FROM sales WHERE SUM(the_amount_of_the_sale) > ANY ( SELECT SUM(the_amount_of_the_sale) FROM sales WHERE l_name = 'Ivanov' ) AND l_name <> 'Ivanov';
ошибка 1111- what is written in the text of the error? - Alexey Shimanskyanynot needed here, because the subquery returns only one result. In the main query, of course, there should be a group by - Mike