SQl 查询按月/年汇总金额

Question

我有一个像这样的表“TABLE”：

Date(datatime)
Paid(int)

我每个月有多个“付费”金额。 我想总结每月/每年的支付金额。

到目前为止，这是我尝试过的，但我在 EXTRACT 和 MONTH 中遇到了错误，但是这些年来我还远远没有完成。

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)

我在这方面不是很方便，我非常感谢一些帮助。

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]) 

当您使用 sql server key words 命名对象时，您需要在对象名称 [] 周围使用方括号。