mysql AUTO_INCREMENT基于另一列

Question

How can I auto increment id column based on the 0 to max (int) value on the price column.

Lets assume that price is ASC, I want the id = 1 increment to start at the $0 mark. What would I have to edit for this code ALTER TABLE table AUTO_INCREMENT = 1 ?

id | price | other columns 
1  | 9
2  | 1
3  | 2
4  | 5

into

id | price | other columns
1  | 1
2  | 2
3  | 5
4  | 9

Answer 1

A easy Way ist to create a new table with one column more with autoincrement.

intert into newtable select '',o.* from oldtable o order by o.price asc;

Then they insert all row in the right order from price in the new table.