通过选择语句的MS Access Union查询顺序

Question

我试图将3个不同的管道分隔表合并为一个，以便可以将其导出为一个文本文件。 每个管道定界表具有不同的结构。 这是我到目前为止所拥有的。 当我运行联合查询时，它将按查询2，查询1，查询3进行排序； 我确信这是因为每个查询的输出都按照ABC顺序进行了最终排序。 有什么方法可以按查询顺序对其进行排序吗？

 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

输出看起来像这样：

 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

Answer 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)