AZ的mysql增量顺序

Question

我想将一个列INT（10）添加到TABLE中，此列显示为1到x，具体取决于列a到7

  Array (
            [0] => stdClass Object 
            ( 
            [brand_id] => 1 
            [cat_id] => 1 
            [qty] => 400
             ) 

            [1] => stdClass Object 
            (
            [brand_id] => 4 
            [cat_id] => 35 
            [qty] => 300 
            [product_id] => 322 
             ) 
             ) 

数字应为= ORDER BY title ASC

谢谢

Answer 1

得到它

SET @sort := 0;
UPDATE mytable 
SET `ordering` = @sort := @sort + 1 ORDER BY title;