转帖：SQL查询按月/年汇总金额

Question

在这里重新发布链接

我的查询是

SELECT MONTH(now()) as m, SUM(total) as grandtotal
FROM tb
group BY YEAR(now()), MONTH(now())

我正在寻找如何从今年和月份获得总计，但我的总计也是去年的总和。 例如，我有 2018 年 8 月 = 20 年和 2017 年 8 月 = 40 年的数据。 所以我的总数将是 60 而不是 20。

示例 sqlfiddle

Answer 1

仅在 group by 中使用月份 - 它将为您提供月份级别的总和，但如果您将年份也按级别分组，那么它将显示年份和月份的总和

SELECT MONTH(now()) as m, SUM(total) as grandtotal
FROM tb
group BY MONTH(now())

Answer 2

根据上次的回答

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

请注意，如果您的表定义不同，则列名也可能不同。

Answer 3

您应该按字段的值分组，而不是按常量分组。

SELECT MONTH(YourDateField) as m, SUM(total) as grandtotal
FROM tb
WHERE YEAR(YourDateField) = YEAR(now())
GROUP BY YEAR(YourDateField), MONTH(YourDateField)