mysql update語句根據子查詢結果把子查詢數據寫入修改字段

需求,應用場景

table1是統計信息表，里面存儲了商店id,一個商店一條數據，table2是訂單表，里面存儲了多個訂單，每條訂單有一個字段是table1的商店id，table3是商品表，存儲了多個商品，table2里面的每條數據在table3里面有1-N條商品數據，table1.shop_id=table2.shop_id，table2.order_id=table3.order_id,把table3同一個商店下面的商品數量統計一下，寫入到table1表的銷量統計字段里

mysql語句

update table1 t1, //修改t1表
(select sum(t3.num) as s , t2.shop_id as shop_id,t2.order_status as order_status
FROM table2 as t2
join table3 as t3
on t2.order_id = t3.order_id
WHERE
t2.order_status = 4 ) c //連表查詢t2,t3查詢結果別名c
set t1.sales_volume = c.s //t1.sales_volume = c.s 字段值
WHERE
t1.shop_id = c.shop_id and c.order_status = 4 //t1.shop_id = 查詢結果集的shop_id