MS Access Union Query Order by Select 语句答案

【问题标题】：MS Access Union Query Order by Select statementsMS Access Union Query Order by Select 语句
【发布时间】：2015-04-15 02:12:09
【问题描述】：

我正在尝试将 3 个不同的管道分隔表合并为一个，以便可以导出为一个文本文件。每个管道分隔表具有不同的结构。这是我到目前为止所拥有的。当我运行联合查询时，它按查询 2、查询 1、查询 3 排序；我确信这是因为每个查询的输出都会对 ABC 顺序进行最终排序。有没有办法按照查询的顺序排序？

 SELECT  qry_Header.HDR  
 from qry_Header

 union

 select qry_GHD_Headers.GHD_Header  
 from qry_GHD_Headers inner join [Coverage ID] ON qry_GHD_Headers.      
 [Coverage ID] = [Coverage ID].[Coverage ID]
 where [Coverage ID].ID = 1

 union


 select 
 [qry_Pipe_Delim].Pipe_Delim 
 FROM qry_Pipe_Delim INNER JOIN [Coverage ID] ON qry_Pipe_Delim.
 [Coverage ID] = [Coverage ID].[Coverage ID]
 where [Coverage ID].ID = 1

输出如下所示：

 GHD|CA015015HL|TM|F|20150414
 HDR|10|P00000000020123|AXQEN16E88|RXHUB|OPTUMRX|CP000005|20150415|104818|FRM|U|20150414|P
 TDT|A|CA015015HL|00008112312|003|||||This medication increases risk of serious toxicity in patients 65 and older. Use safer alternatives.|National guidelines and quality measures recommend avoiding this medication in patients 65 yrs and older due to incre

首选输出：

 HDR|10|P00000000020123|AXQEN16E88|RXHUB|OPTUMRX|CP000005|20150415|104818|FRM|U|20150414|P
 GHD|CA015015HL|TM|F|20150414
 TDT|A|CA015015HL|00008112312|003|||||This medication increases risk of serious toxicity in patients 65 and older. Use safer alternatives.|National guidelines and quality measures recommend avoiding this medication in patients 65 yrs and older due to incre

【问题讨论】：

标签： sql ms-access union

【解决方案1】：

我想通了——至少是一种可行的解决方法

 SELECT HDR
 FROM(
 SELECT  1, qry_Header.HDR  
 from qry_Header

 union

  select 2, qry_GHD_Headers.GHD_Header  
  from qry_GHD_Headers inner join [Coverage ID] ON qry_GHD_Headers.      
  [Coverage ID] = [Coverage ID].[Coverage ID]
  where [Coverage ID].ID = 1

  union


 select 3,
 [qry_Pipe_Delim].Pipe_Delim 
 FROM qry_Pipe_Delim INNER JOIN [Coverage ID] ON qry_Pipe_Delim.
 [Coverage ID] = [Coverage ID].[Coverage ID]
 where [Coverage ID].ID = 1)

【讨论】：