SQL语句显示每个客户的所有订单的总成本
我是SQL新手,对此查询有困难,我有一个名为Orders的表,其中有CustomerName、OrderDate和Amount列 我需要写一个SQL语句来显示每个客户所有订单的总成本SQL语句显示每个客户的所有订单的总成本,sql,grouping,Sql,Grouping,我是SQL新手,对此查询有困难,我有一个名为Orders的表,其中有CustomerName、OrderDate和Amount列 我需要写一个SQL语句来显示每个客户所有订单的总成本 SELECT CustomerName, SUM(Amount) FROM Orders GROUP BY CustomerName select customername,sum(amount) from orders group by customername
SELECT CustomerName, SUM(Amount)
FROM Orders
GROUP BY CustomerName
select customername,sum(amount) from orders group by customername