Question

我在MSAccess中创建了三个表（PCH Info，Attorney zip-county，Medical-zip code-county）。每个表都有类似的邮政编码，城市和县的字段。我的目标是在3表中搜索邮政编码，城市和县中的任何一个，并返回满足一个或两个搜索条件的结果。我已经创建了3个搜索字段，并在三个表上使用UNION构建我的查询。但我的问题是，如果我专门搜索数据，它会返回结果，其他结果不符合标准。见下面的代码

    SELECT [PCH Info].City, [PCH Info].[Zip Code], [PCH Info].County, "PCH Info"
FROM [PCH Info]
WHERE (([PCH Info].City) Like Forms!Search.qcity & "*") And (([PCH Info].[Zip Code]) Like Forms!Search.qcode & "*") And (([PCH Info].County) Like Forms!Search.qcounty & "*") OR (([PCH Info].[Network Member]) = Yes)

 UNION

SELECT [Medical-Zip Code-County].City, [Medical-Zip Code-County].[ZIP Code], [Medical-Zip Code-County].County , "Medical-Zip Code-County"
FROM [Medical-Zip Code-County]
WHERE (([Medical-Zip Code-County].City) Like Forms!Search.qcity & "*") And (([Medical-Zip Code-County].[ZIP Code]) Like Forms!Search.qcode & "*") And (([Medical-Zip Code-County].County) Like Forms!Search.qcounty & "*")

 UNION 

SELECT [Attorney-Zip-County].City, [Attorney-Zip-County].[ZIP Code], [Attorney-Zip-County].[Country/Region], "Attorney-Zip-County"
FROM  [Attorney-Zip-County]
WHERE (([Attorney-Zip-County].City) Like Forms!Search.qcity & "*") And (([Attorney-Zip-County].[ZIP Code]) Like Forms!Search.qcode & "*") And (([Attorney-Zip-County].[Country/Region]) Like Forms!Search.qcounty & "*");

我的主要挑战来自第一个查询，其中PCH Info.Network会员=是，如果我进行搜索以满足此标准，它仍然给我符合标准的结果。我可能做错了什么或UNION查询问题？谢谢。

Answer 1

怎么样：

SELECT City, [ZIP Code], County, Source, [Network Member] 
FROM (
   SELECT p.City, p.[Zip Code], p.County, 
          "PCH Info" As Source, p.[Network Member]
   FROM [PCH Info] p

   UNION ALL

   SELECT m.City, m.[ZIP Code], m.County , 
          "Medical-Zip Code-County" As Source, False As [Network Member]
   FROM [Medical-Zip Code-County] m

   UNION ALL

   SELECT a.City, a.[ZIP Code], a.[Country/Region], 
          "Attorney-Zip-County" As Source, False As [Network Member]
   FROM  [Attorney-Zip-County] a) As r

WHERE (r.City Like Forms!Search!qcity & "*"
       And r.[Zip Code] Like Forms!Search!qcode & "*"
       And r.County Like Forms!Search!qcounty & "*") 
OR r.[Network Member] = Yes

在MS ACCESS中创建搜索查询

1 个答案: