wm_concat(to_char(u.user_name)) as user_name, ----多条数据合并在一行显示 wm_concat(to_char(u.id)) as org_user_id, ----多条数据合并在一行显示 decode(bob.id,'','个体',sd.name) as business_type, ---- id 为空就显示类型为个体，不为空就显示相对应的类型 COALESCE(bob.legal_person,e.manage_name) as legal_person, ---- egal_person, manage_name 显示不为空的那个那个字段 作为一个字段显示