Mysql查询同一天的多条数据相加

SELECT DATE(tradingTime) AS date, SUM(transactionAmount) AS amoutFROM 表名 GROUP BY DATE(tradingTime)

请运行下列sql更新语句：

update B,

(select sum(金额) as n from A

where 状态='F' and 时间<now()) t

set B.总金额=t.n

SELECT

o1.order_id,

MAX(o1.subtotal) AS 订单总金额,

SUM(o2.cost) AS 订单明细合计

FROM

`order` o1 JOIN order_details o2 ON (o1.order_id = o2.order_id)

GROUP BY

o1.order_id

HAVING

MAX(o1.subtotal) <>SUM(o2.cost)

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