SELECT COUNT(*) AS supplier_count FROM biz_supplier WHERE user_id IS NOT NULL;
SELECT u.user_name, u.nick_name, r.role_key FROM sys_user u JOIN sys_user_role ur ON u.user_id=ur.user_id JOIN sys_role r ON ur.role_id=r.role_id WHERE r.role_key='supplier' ORDER BY u.user_name;
