Question

我应该编写一个查询，显示2010年每个月的降利总额。

到目前为止，我有一个查询显示2010年降序的总利润，我有一个可以提取每个月的查询，但我似乎无法连接这两个。

select (SalesPrice - AcquisitionPrice) profit, datesold
from Transaction
where DateSold >= '10-jan-01' and DateSold <= '10-dec-31';

和

select to_char(datesold, 'mon')
from transaction
group by to_char(datesold, 'mon')

Answer 1

Oracle查询：

SELECT EXTRACT( MONTH FROM datesold ) AS mnth,
       SUM( SalesPrice - AcquisitionPrice ) AS profit
FROM   Transaction
WHERE  EXTRACT( YEAR FROM datesold ) = 2010
GROUP BY EXTRACT( MONTH FROM datesold )
ORDER BY EXTRACT( MONTH FROM datesold ) DESC

MySQL和Oracle查询：

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查询显示2010年每个月的总利润按降序排列？

1 个答案: