Question

我在SQL Server 2005中复制结果时遇到了一些麻烦。我之前使用ROW NUMBER函数来显示我的查询结果，但是我无法在下面看到只显示rownum 1的查询：

SELECT *
FROM (SELECT l.insbilleddate, l.pickupdate, l.patientname, l.inscompanyname AS Payor, l.tripid, 
l.sales, l.cost, l.sales-l.cost AS Profit, l.profitpct AS 'Profit Pct', u.pUPFName + ' ' + 
u.pUPLName AS Dispatcher, ROW_NUMBER() OVER (PARTITION BY l.tripid ORDER BY d.trDispatchDate 
ASC) AS rownum
FROM  pUsersPrinters u
INNER JOIN TranslationDispatch d
INNER JOIN v_OLAPdataTR l ON d.trTripid = l.tripid ON u.pUP_id = d.trDispatchedBy
GROUP BY l.insbilleddate, l.pickupdate, l.patientname, l.inscompanyname, l.tripid, l.sales, 
l.cost, l.profitpct, u.pUPFName, u.pUPLName, d.trDispatchDate
HAVING l.insbilleddate >= '6/1/2014' And l.insbilleddate < '7/1/2014' AND l.cost > '0' AND 
l.profitpct < '30') q1
WHERE rownum = 1
ORDER BY q1.profitpct

每次用户发送旅行时，TranslationDispatch表都会添加一行。如果需要重新分配行程，则数据库不会覆盖原始调度程序，而是添加另一行，其中包含userID，tripID和调度日期。 d.trTripid = l.tripid比较会导致每个调度程序都显示该行程。

例如，结果显示为：

TripID     trDispatchedBy    trDispatchDate
1234        Carlos            6/25/2014 10:00
1234        Tim               6/25/2014 10:02

......但我只想在他首先派出旅行时展示卡洛斯。

编辑：我已经在@Vulcronos的帮助下调整了上面的查询以使其工作，方法是添加一个表别名（q1）并将rownum = '1'转换为rownum = 1以正确显示我的最终版本结果

Answer 1

我会尝试：

ROW_NUMBER () OVER ( PARTITION BY  l.insbilleddate, l.pickupdate, l.patientname, 
l.inscompanyname, l.tripid, l.sales, l.cost, l.profitpct, u.pUPFName, u.pUPLName, 
d.trDispatchDate ORDER BY trDispatchDate ASC)

这应该在每个团体最早的发货日期给你一个行号。然后，您可以将整个查询包装在：

select *
from (my_query)
where rownum = 1

Answer 2

如何添加＆＃34; TOP 1＆＃34;到外部查询

SELECT TOP 1 *
FROM(SELECT L.Insbilleddate, 
          L.Pickupdate, 
          L.Patientname, 
          L.Inscompanyname AS Payor, 
          L.Tripid, 
          L.Sales, 
          L.Cost, 
          L.Sales - L.Cost AS Profit, 
          L.Profitpct AS 'Profit Pct', 
          U.Pupfname + ' ' + U.Puplname AS Dispatcher, 
          ROW_NUMBER()OVER(PARTITION BY L.Tripid ORDER BY D.Trdispatchdate ASC)AS Rownum
     FROM Pusersprinters U
          INNER JOIN Translationdispatch D
                     INNER JOIN V_Olapdatatr L ON D.Trtripid = L.Tripid ON U.Pup_Id = D.Trdispatchedby
    GROUP BY L.Insbilleddate, 
             L.Pickupdate, 
             L.Patientname, 
             L.Inscompanyname, 
             L.Tripid, 
             L.Sales, 
             L.Cost, 
             L.Profitpct, 
             U.Pupfname, 
             U.Puplname, 
             D.Trdispatchdate
    HAVING L.Insbilleddate >= '6/1/2014'
       AND L.Insbilleddate < '7/1/2014'
       AND L.Cost > '0'
       AND L.Profitpct < '30') A
 ORDER BY A.Profitpct;

仅为每个唯一结果返回第一个结果

2 个答案: