如何从其他 table 中获取内连接不同值的第一个值

Question

我有下面的图片和查询。问题是我的查询显示错误的值，在多个记录中没有显示正确的酒店名称，这意味着我想要 VoucherHotelTable 的第一家酒店，但它向我显示第二家酒店，因为 Distinct 我想请帮助我这个如何处理

Select distinct v.VoucherId,u.Name,v.ArrivalFromCity,
       CAST(v.ArrivalDate  AS DATE) as ADDate, v.ArrivalFlightNo, hm.HotelName
from  VoucherMaster v
inner join UserMaster u on  v.AgentId = u.UserId
inner join VoucharHotel vh on v.VoucherId = vh.VoucharId
inner join HotelMaster hm on vh.HotelId = hm.HotelId
inner join AirportTerminal t on  v.ArrivalTerminalId = t.AirprtTerminalId 
where v.ArrivalDate  between '11/15/2018 12:00:00 AM'
    and '11/16/2018 12:00:00 AM'  AND v.ArrivalSectorId = 3

Answer 1

此查询正在通过分区进行。试试这个。 rank() 函数应该 return 每张优惠券的酒店排名。

;with VoucherHotelRnk as (
    select voucherId, hotelId, date, rank() over(partition by voucherId order by date) rnk
    from VoucharHotel
)
Select v.VoucherId,u.Name,v.ArrivalFromCity,
       CAST(v.ArrivalDate  AS DATE) as ADDate, v.ArrivalFlightNo, hm.HotelName
from  VoucherMaster v
inner join UserMaster u on  v.AgentId = u.UserId
inner join VoucherHotelRnk vh on v.VoucherId = vh.VoucherId and vh.rnk = 1
inner join HotelMaster hm on vh.HotelId = hm.HotelId
inner join AirportTerminal t on  v.ArrivalTerminalId = t.AirprtTerminalId 
where v.ArrivalDate  between '11/15/2018 12:00:00 AM'
    and '11/16/2018 12:00:00 AM'  AND v.ArrivalSectorId = 3

Answer 2

;with VoucherHotelRnk as (
    select voucherId, hotelId, date, ROW_NUMBER() over(partition by voucherId order by date) rowcount
    from VoucharHotel
)
Select v.VoucherId,u.Name,v.ArrivalFromCity,
       CAST(v.ArrivalDate  AS DATE) as ADDate, v.ArrivalFlightNo, hm.HotelName
from  VoucherMaster v
inner join UserMaster u on  v.AgentId = u.UserId
inner join VoucherHotelRnk vh on v.VoucherId = vh.VoucherId and vh.rowcount= 1
inner join HotelMaster hm on vh.HotelId = hm.HotelId
inner join AirportTerminal t on  v.ArrivalTerminalId = t.AirprtTerminalId 
where v.ArrivalDate  between '11/15/2018 12:00:00 AM'
    and '11/16/2018 12:00:00 AM'  AND v.ArrivalSectorId = 3

如何从其他 table 中获取内连接不同值的第一个值

how to get first value of inner join distinct value from other table

sql-server

sql-server-2012

sql-server-2014