mysql事件（定時任務）處理超時失效訂單

MySQL事件（定時任務）

https://blog.csdn.net/pan_junbiao/article/details/86489237

UPDATE wz_mer_goods_spec as a,
(
SELECT osn,shop_id,SUM(goods_num) g_num,state,spec_id from wz_mer_goods_details join wz_mer_goods_order using(osn) WHERE state=0 GROUP BY
spec_id
) as d
SET a.surplus_num=a.surplus_num + d.g_num
WHERE a.shop_id=d.shop_id
AND a.spec_id=d.spec_id

AND TIMESTAMPDIFF(SECOND, a.create_time, NOW()) > 15;
UPDATE
wz_mer_goods_order AS order_
set
order_.state = '3'
WHERE 1 = 1
AND order_.state = '0'
AND TIMESTAMPDIFF(SECOND, order_.create_time, NOW()) > 15;

END
執行場景：
1：多-用戶--同商品同規格（spec_id+mer_gid）--訂單失效--同商品同規格 庫存增加對應失效訂單數量
2：多用戶--同商品不同規格--- 訂單失效--庫存對應增加失效訂單數量
原始庫存