#문제1select count(1) from payment pwhere pay_type like "%MONEY%" and p.pay_amount >= 500000;#문제2select pay_type, min(pay_amount) from payment pgroup by pay_type having min(pay_amount) >= 500;#문제3select serverno, count(distinct p.game_account_id) users_with_payment from payment pinner join users u on u.game_account_id = p.game_account_idgroup by servernoorder by 1;#문제4select u.game_account_id, co..