确定每个州的商店平均值

Question

一个州有特定的商店

我需要显示每行所有商店的AVERAGE销售额。

select 
    tbl_Mill_FAS.Mill_Name,
    tbl_Zone_FAS.Zone_Name,
    tbl_Station.Station_Name,
    tbl_Daily_Data.dValue, 
    AVG(tbl_Daily_Data.dValue)
from tbl_Mill_FAS
inner join tbl_Zone_FAS on tbl_Zone_FAS.Zone_Id = tbl_Mill_FAS.Zone_Id
inner join tbl_Station on tbl_Station.Station_Id = tbl_Mill_FAS.Station_Id
inner join tbl_Daily_Data on tbl_Daily_Data.Daily_Id = tbl_Mill_FAS.Daily_Id
group by 
    tbl_Mill_FAS.Mill_Name,
    tbl_Zone_FAS.Zone_Name,
    tbl_Station.Station_Name,
    tbl_Daily_Data.dValue


State  - Pongola

Store1 - Mass Mart - Sales: $4000 - Avg: $1669
Store2 - Wallmart  - Sales: $333  - Avg: $1669
Store3 - CNN       - Sales: $674  - Avg: $1669

Answer 1

    select 
        tbl_Mill_FAS.Mill_Name,
        tbl_Zone_FAS.Zone_Name,
        tbl_Station.Station_Name,
        tbl_Daily_Data.dValue, 
        AVG(tbl_Daily_Data.dValue),
AVG(tbl_Daily_Data.dValue) over (partition by tbl_Mill_FAS.Mill_Name)
    from tbl_Mill_FAS
    inner join tbl_Zone_FAS on tbl_Zone_FAS.Zone_Id = tbl_Mill_FAS.Zone_Id
    inner join tbl_Station on tbl_Station.Station_Id = tbl_Mill_FAS.Station_Id
    inner join tbl_Daily_Data on tbl_Daily_Data.Daily_Id = tbl_Mill_FAS.Daily_Id
    group by 
        tbl_Mill_FAS.Mill_Name,
        tbl_Zone_FAS.Zone_Name,
        tbl_Station.Station_Name,
        tbl_Daily_Data.dValue