查找和結果

Question

我怎樣才能找到結果的總和以下查詢

select DATEPART(month,date) as month ,sum(volume) as Total_Volume 
from traffic_data_replica 
where DATENAME(weekday,date)='sunday' and DATENAME(year,date)=2013 
group by DATEPART(month,date) 
order by DATEPART(month,date); 

總之，上述查詢

Answer 1

如果你想，你收到排在當前查詢的所有Total_Volume的總和，你可以使用：

SELECT SUM(Total_Volume) 
FROM (
    select DATEPART(month,date) as month , 
    sum(volume) as Total_Volume 
    from traffic_data_replica 
    where 
    DATENAME(weekday,date)='sunday' 
    and DATENAME(year,date)=2013 
    group by DATEPART(month,date) 
    order by DATEPART(month,date) 
) AS Data 

如果你想，你收到排在當前查詢的行數，你可以使用：

SELECT COUNT(*) 
FROM (
    select DATEPART(month,date) as month , 
    sum(volume) as Total_Volume 
    from traffic_data_replica 
    where 
    DATENAME(weekday,date)='sunday' 
    and DATENAME(year,date)=2013 
    group by DATEPART(month,date) 
    order by DATEPART(month,date) 
) AS Data 

Answer 2

嘗試像返回的結果的總和

SELECT COUNT(*) FROM 
(
    select DATEPART(month,date) as month ,sum(volume) as Total_Volume 
from traffic_data_replica 
where DATENAME(weekday,date)='sunday' and DATENAME(year,date)=2013 
group by DATEPART(month,date) 
order by DATEPART(month,date) 
) AS subquery;