Question

我想在Microsoft Access 2016中执行查询，显示范围（最大 - 最小）与每日平均值。

我已经完成了一个查询，显示“16-Jun-16”和“17-Jun-16”之间所有记录的结果：

SELECT [Date Time], [Operation Grade-Load], [MFR g/10min]
FROM [In process analysis result]
WHERE ([Date Time] Between Date()-360 And Date()-358)
AND ([Operation Grade-Load] Like "MH*");

但是，我对如何继续修改我的查询以显示每天的“范围”和“平均值”一无所知。我想我应该使用Avg（），Max（） - Min（）函数。任何人都可以指导我吗？

编辑：每天根据[前一天02:00:00]和[今天02:00:00]计算。例如：

16-Jun-16 =“16-Jun-16 02:00:00”和“17-Jun-16”之间的行记录 02:00:00"
17-Jun-16 =“17-Jun-16 02:00:00”之间的行记录 “18-Jun-16 02:00:00”
...

甚至可以根据这个逻辑计算日期吗？

感谢任何帮助。谢谢。

编辑1：我更新了我的SQL查询：

SELECT [Date Time], [Range], [Average]
FROM [In process analysis result], (SELECT Max([MFR g/10min])-Min([MFR g/10min]) AS [Range], Avg([MFR g/10min]) AS Average
FROM [In process analysis result]
WHERE ((([In process analysis result].[Date Time]) Between Date()-360 And Date()-358) AND (([In process analysis result].[Operation Grade-Load]) Like "MH*"))
)  AS [%$##@_Alias]
WHERE ((([In process analysis result].[Date Time]) Between Date()-360 And Date()-358) AND (([In process analysis result].[Operation Grade-Load]) Like "MH*"))
ORDER BY [In process analysis result].[Date Time];

结果证明它足够接近我想要的......但还没有，因为它不是基于每天计算的。

编辑2：这是预期的结果：

编辑3：在@USeptim之后，这是创建的查询的结果。但是，它会使用[Range]和[PromedioDeMFR g / 10min]创建另外两列。

Answer 1

你可以这样做：

SELECT [In process analysis result].[Date Time], [In process analysis 
result].[MFR g/10min], QueryAux.Range, QueryAux.[PromedioDeMFR g/10min]
FROM [In process analysis result] INNER JOIN 
(SELECT Max([MFR g/10min])-Min([MFR g/10min]) AS Range, Avg([In process 
analysis result].[MFR g/10min]) AS [PromedioDeMFR g/10min], [In process 
analysis result].[Date Time], [In process analysis result].[Operation Grade-
Load]
FROM [In process analysis result]
GROUP BY [In process analysis result].[Date Time], [In process analysis 
result].[Operation Grade-Load]) QueryAux 
ON ([In process analysis result].[Operation Grade-Load] = QueryAux.
[Operation Grade-Load]) AND ([In process analysis result].[Date Time] = 
QueryAux.[Date Time])
WHERE ((([In process analysis result].[Date Time]) Between Date()-360 And 
Date()-358) AND (([In process analysis result].[Operation Grade-Load]) Like 
"MH*"))
ORDER BY [In process analysis result].[Date Time];

您可以使用我调用的子查询创建一个查询＆＃34; query aux＆＃34;并直接引用它。

MS Access 2016查询范围与每日平均值

1 个答案: