选择每件产品比率最高和价格最低的供应商

Question

从我的订单中 table 我正在尝试为每个产品获取具有最高比率订单和最低价格的供应商。

      select v.[Vendor_pk], p.[Product_pk],o.[UnitPrice], o.[RatioOrder], o.[TotalPrice]
  from [DWH].[ORDERSfact] o
  inner join [DWH].[VENDORdim] v
  on o.[Vendor_pk]=v.[Vendor_pk]
  inner join [DWH].[PRODUCTdim] p
  on o.[Product_pk]= p.[Product_pk]

  order by 2, 4 desc, 3

我怎么能在这里做到这一点？

Answer 1

I'm trying to get per product the vendor with the highest Ratio order and lowest price.

使用row_number():

select vp.*
from (select v.[Vendor_pk], p.[Product_pk],o.[UnitPrice], o.[RatioOrder], o.[TotalPrice],
             row_number() over (partition by product_pk order by ratioorder desc, price asc) sa seqnum
      from [DWH].[ORDERSfact] o join
           [DWH].[VENDORdim] v
           on o.[Vendor_pk] = v.[Vendor_pk] join
           [DWH].[PRODUCTdim] p
           on o.[Product_pk] = p.[Product_pk]
     ) vp
where seqnum = 1;

选择每件产品比率最高和价格最低的供应商

Selecting the vendor with highest Ratio and lowest price per product

sql

sql-server

inner-join

max

min