如何在使用存储过程时创建具有自动增量的 id 字段？

Question

我有这个存储过程。如何选择一个变量作为可以在 sp 的每一行结果中 +1 值的字段？我需要它来制作一个虚拟 id 字段。请帮帮我。

CREATE DEFINER=`root`@`localhost` PROCEDURE `customer_order$count_order_by_month`()
BEGIN
    select count(1) as amount, month(created_date) as months, year(created_date) as years
    from customer_order
    group by  { fn month(created_date) }, MONTH(created_date), YEAR(created_date)
    order by Year(created_date), month(created_date);
END

Answer 1

你只是想要row_number()吗？

select row_number() over (order by min(created_date)) as seqnum,
       count(1) as amount, month(created_date) as months, year(created_date) as years
from customer_order
group by  { fn month(created_date) }, MONTH(created_date), YEAR(created_date)
order by Year(created_date), month(created_date);