原公式:if( len(lower(GETUSERDEPARTMENTS()))-len(substitute(GETUSERDEPARTMENTS(), ",", ""))=0, left(lower(GETUSERDEPARTMENTS()), 2), if( len(lower(GETUSERDEPARTMENTS()))-len(substitute(GETUSERDEPARTMENTS(), ",", ""))=1,mid(lower(GETUSERDEPARTMENTS()),4,2),mid(lower(GETUSERDEPARTMENTS()),find("@",substitute(lower(GETUSERDEPARTMENTS()),",","@",2))+1,100) ))效果:想实现效果各位大佬看看,怎么样进行修改,已更新问题描述