允许双重搜索的查询

Question

这是我拥有的当前表。

WeldingProcedure  
ID        TYPE     Metal1        Metal2      ThicknessMin       ThicknessMax
50-1      SMAW       1             2              1                  2
50-2      SAW        2             2              3                  5
51-3      FCAW       3             2              2                  6
52-1      SMAW       1             2             0.5                 2

我当前的查询是

SELECT *
FROM WeldingProcedure as WPS
WHERE WPS.[Metal#(P-No)]=Forms!MatchSearch_form!metal1  
And WPS.[Metal#2(P-No)]=Forms!MatchSearch_form!metal2   
And WPS.ThicknessMin<=Forms!MatchSearch_form!thickness
And WPS.ThicknessMax>=Forms!MatchSearch_form!thickness
And WPS.[Welding _Type]=Forms!MatchSearch_form!weldingtype

所以当我使用以下条件进行搜索时：

Type = SMAW  
Metal1 = 1
Metal2 = 2
Thickness = 1.5

我得到了

的结果

ID        TYPE     Metal1        Metal2      ThicknessMin      ThicknessMax
50-1      SMAW       1             2              1                  2
52-1      SMAW       1             2             0.5                 2

我希望用户也能够键入

Type = SMAW  
Metal1 = 2
Metal2 = 1
Thickness = 1.5 

并得到相同的结果。我可以做些什么来更改查询以实现这一点？如果我输入两次值，它会在表格中出现。

Answer 1

SELECT  *
FROM    WeldingProcedure as WPS
WHERE   ((WPS.[Metal#(P-No)] = Forms!MatchSearch_form!metal1 AND WPS.[Metal#2(P-No)] = Forms!MatchSearch_form!metal2) OR (WPS.[Metal#(P-No)] = Forms!MatchSearch_form!metal2 AND WPS.[Metal#2(P-No)] = Forms!MatchSearch_form!metal1))
        AND WPS.ThicknessMin<=Forms!MatchSearch_form!thickness
        AND WPS.ThicknessMax>=Forms!MatchSearch_form!thickness
        AND WPS.[Welding _Type]=Forms!MatchSearch_form!weldingtype

Answer 2

如果我理解正确，您希望用户输入 2 个值并返回 Metal1 和 Metal2 等于这两个值的记录，但用户可以按任一顺序输入值（即输入 Metal1 然后 Metal2 或输入 Metal2 然后金属1)。

如果是这样，那么这就是您想要的查询。

SELECT *
FROM WeldingProcedure as WPS
WHERE 
(
    (WPS.[Metal#(P-No)]=Forms!MatchSearch_form!metal1 And WPS.[Metal#2(P-No)]=Forms!MatchSearch_form!metal2)
    OR
    (WPS.[Metal#(P-No)]=Forms!MatchSearch_form!metal2 And WPS.[Metal#2(P-No)]=Forms!MatchSearch_form!metal1)
)
And WPS.ThicknessMin<=Forms!MatchSearch_form!thickness
And WPS.ThicknessMax>=Forms!MatchSearch_form!thickness
And WPS.[Welding _Type]=Forms!MatchSearch_form!weldingtype