select * from form_bo_ent_relation where bo_defid_ =#{defId} and ref_ent_id_ =#{entId} DELETE FROM form_bo_ent_relation WHERE bo_defid_=#{defId} SELECT * FROM form_bo_ent_relation WHERE bo_defid_=#{defId} SELECT * FROM form_bo_ent_relation WHERE ref_ent_id_=#{entId}