摘要： MERGE INTO tt_secu_orgs p USING (select id, level as c_level , substr(sys_connect_by_path(id,'-')||'-',2) nest_path from tt_secu_orgs start with id = 1 connect by nocycle prior id = parent_id) np ON (p.id = np.id) WHEN MATCHED THEN UPDATE SET p.current_level = np.c_level, p.org_str = 阅读全文