（When performing a select on the view above, is it true that if I don't actually select field Y from the view above that column is not processed?
（When performing a select on the view above, is it true that if I don't actually select field Y from the view above that column is not processed?
当我进行查询的时候，假如没有选择视图上的Y列，那么这列不会进行处理，是这样的吗？