一、 不分组直接添加顺序

• 代码

• SELECT @rownum:=@rownum+1 AS rownum, a.cus_number
  FROM (SELECT @rownum:=0) r, invest

二、 分组排序编号：

1. 代码

• SELECT a.`cus_number`,a.`id`,count(*) AS '排名',a.`invest_count`
  FROM borrow_tender   a 
  LEFT JOIN borrow_tender  b
  on a.`cus_number` = b.`cus_number` 
  and a.`id`>= b.`id`
  GROUP BY a.`cus_number`, a.`id`

• 示例：

• 

2. 代码

SET @i=0;
CREATE TABLE user_order AS 
SELECT
	(@i:=@i+1) AS order_id,
	order_uid,
    order_date
from order_list group by order_uid

3. 通过mysql8.0 的row_number()  代码：

SELECT
	row_number() over(partition by newsid,final_yr,final_mon order by count( * ) desc) AS orderid,
    newsid,
	final_yr,
	final_mon,
	count( * ) AS cnt 
FROM
	`table_final`  
GROUP BY
    newsid
	final_yr,
	final_mon
ORDER BY
    newsid,
	final_yr,
	final_mon DESC