MySQL ORDER by sort problem

1. ORDER BY id DESC

Desc: Descending, that is, from large to small, ASC ascending is from small to large

2. When more than one field is sorted:

For example: ORDER by ID desc,sort desc;

Prioritize by ID in descending order, if the ID is the same, then sort by sort Descending

If the ID is a primary key or is unique, then sort by sort in the back.

3. It should be like this, but also the logic hehe

4. Off-duty meal about cannon, the end of the farm day of the bitter forced life