constsql="SELECT team_name, training_institution_team, name_team_coach, nominations, name_first_participant, name_second_participant, name_third_party, concat(first_partial_class,',',second_class,',',third_part_class) as classTeam, reg_time_add FROM members WHERE 1 ORDER BY reg_time_add DESC";
constsql="SELECT team_name, training_institution_team, name_team_coach, nominations, name_first_participant, name_second_participant,age_groups.name as classTeam, reg_time_add FROM members, age_groups WHERE ROUND((first_partial_class + second_class)/2) <= age_groups.class_max and ROUND((first_partial_class + second_class)/2) >= age_groups.class_min ORDER BY reg_time_add DESC";