SQL查询按月/年

Question

我有一个表“TABLE”这样的总结式的数额。 我想总结每月/每年的付款金额。

到目前为止，这是我尝试过的，但是我在EXTRACT和MONTH中遇到了错误，但是我很难完成这些年。

SELECT 
    EXTRACT(MONTH FROM Period) AS reference_month 
    , SUM(Paid) AS monthly_payments 
FROM Paid 
GROUP BY EXTRACT(MONTH FROM Period) 
ORDER BY EXTRACT(MONTH FROM Period) 

我在这方面不太方便，我非常感谢您的帮助。

Answer 1

select year(date) as y, month(date) as m, sum(paid) as p 
from table 
group by year(date), month(date) 

Answer 2

SELECT YEAR([Date]) AS [Year], MONTH([Date]) AS [Month], SUM(Paid) AS Total 
FROM TABLE_NAME 
GROUP BY YEAR([Date]), MONTH([Date]) 

你需要用方括号你的对象命名[]当你命名与SQL Server key words你的对象。