$consultant_sql='select c.*,u.display_name,s.average_score from '.tospur_consultant_table.' c '.
'left join '.wp_users_table.' u on c.id = u.ID '.
'left join (select consultant_id,sum(score)/count(score) as average_score from '.tospur_consultant_score_table.' where valid=1 group by consultant_id) s on c.id = s.consultant_id '.