查询语句

update chance set saleprice=(select price from product where name='name2') where productId=(select productId from product where name='name2');

select clientName,sum(saleprice*count) as totalSale from chance group by clientname;

select clientName from chance  group by clientname having sum(saleprice*count)=(select max(totalSale) from (select sum(saleprice*count) as totalSale from chance group by clientname));