将 12 个具有不同“where”条件的 MS Access 查询组合到一个查询中

Posted 2023-05-07

【中文标题】将 12 个具有不同“where”条件的 MS Access 查询组合到一个查询中

【英文标题】：Combining 12 MS Access queries with different "where" criteria into one query

【发布时间】：2016-08-29 16:53:42

【问题描述】：

我有十二个不同的 SELECT 查询，每个查询都有不同的 WHERE 条件。每个查询都有相同的 ID 代码 (APINumber)，我想创建一个输出：

API 编号 |来自查询 1 的数据 |来自查询 2 的数据 |等等

我目前将每个查询链接到 excel，在 excel 中刷新每个查询后，我有一个单独的 vlookups 选项卡，它结合了所有数据。我的问题是查询需要很长时间才能刷新，因此通过 excel 进行合并是非常低效的。最终，我的目标是链接到 Tableau 文件以进行可视化。

我找到了有关如何链接 2 个查询的留言板，但尝试链接所有 12 个查询让我不知所措。对于给定的 ID 代码，某些数据字段将为空白，但我仍然希望 ID 代码显示。

https://dba.stackexchange.com/questions/63506/merge-two-select-queries-with-different-where-clauses

这是我的疑问：

总水

SELECT dbo_RegistryUpload.APINumber, Avg(dbo_RegistryUpload.TotalWater) AS AvgOfTotalWater
FROM (dbo_RegistryUpload AS dbo_RegistryUpload INNER JOIN (dbo_RegistryUploadPurpose INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN [API Count] ON dbo_RegistryUpload.APINumber = [API Count].APINumber
WHERE ((([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"));

水%

SELECT dbo_RegistryUpload_1.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS WaterPerc
FROM (dbo_RegistryUpload AS dbo_RegistryUpload_1 INNER JOIN (dbo_RegistryUploadPurpose INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON dbo_RegistryUpload_1.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN [API Count] ON dbo_RegistryUpload_1.APINumber = [API Count].APINumber
WHERE (((dbo_RegistryUploadIngredients.IngredientName) Like "*base*") AND (([API Count].Howmany)=1)) OR (((dbo_RegistryUploadIngredients.IngredientName) Like "*Carrier*") AND (([API Count].Howmany)=1)) OR ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.Purpose) Like "*base*")) OR ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.Purpose) Like "*carrier*")) OR ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.Purpose) Like "*water*"))
GROUP BY dbo_RegistryUpload_1.APINumber
HAVING (((dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*"));

支撑剂

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS Prop
FROM [API Count] INNER JOIN ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON [API Count].APINumber = dbo_RegistryUpload.APINumber
WHERE (((dbo_RegistryUploadPurpose.Purpose) Like "*prop*" And (dbo_RegistryUploadPurpose.Purpose) Not Like "*GEL*") AND (([API Count].Howmany)=1)) OR (((dbo_RegistryUploadPurpose.Purpose) Like "*sand*" And (dbo_RegistryUploadPurpose.Purpose) Not Like "*gel*") AND (([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber)="42"));

100目支撑剂

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS 100mesh
FROM [API Count] INNER JOIN ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON [API Count].APINumber = dbo_RegistryUpload.APINumber
WHERE (((dbo_RegistryUploadPurpose.TradeName) Like "*100 mesh*") AND (([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*"));

20/40 支撑剂

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS 2040
FROM [API Count] INNER JOIN ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON [API Count].APINumber = dbo_RegistryUpload.APINumber
WHERE (((dbo_RegistryUploadPurpose.TradeName) Like "*20/40*") AND (([API Count].Howmany)=1)) OR (((dbo_RegistryUploadPurpose.TradeName) Like "*20-40*") AND (([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"));

30/50 支撑剂

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS 3050
FROM [API Count] INNER JOIN ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON [API Count].APINumber = dbo_RegistryUpload.APINumber
WHERE (((dbo_RegistryUploadPurpose.TradeName) Like "*30/50*") AND (([API Count].Howmany)=1)) OR (((dbo_RegistryUploadPurpose.TradeName) Like "*30-50*") AND (([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"));

40/70 支撑剂

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS 4070
FROM [API Count] INNER JOIN ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON [API Count].APINumber = dbo_RegistryUpload.APINumber
WHERE (((dbo_RegistryUploadPurpose.TradeName) Like "*40/70*") AND (([API Count].Howmany)=1)) OR (((dbo_RegistryUploadPurpose.TradeName) Like "*40-70*") AND (([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"));

断路器百分比

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS BreakerPerc
FROM [API Count] INNER JOIN ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON [API Count].APINumber = dbo_RegistryUpload.APINumber
WHERE ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.Purpose) Like "*breaker*"))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"));

交联质量%

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS Crosslink
FROM ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) INNER JOIN [API Count] ON dbo_RegistryUpload.APINumber = [API Count].APINumber
WHERE (((dbo_RegistryUploadPurpose.Purpose) Like "cross*" And (dbo_RegistryUploadPurpose.Purpose) Not Like "*breaker*") AND (([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"));

凝胶质量

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS GelMass
FROM ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) INNER JOIN [API Count] ON dbo_RegistryUpload.APINumber = [API Count].APINumber
WHERE (((dbo_RegistryUploadPurpose.Purpose) Like "gel*" And (dbo_RegistryUploadPurpose.Purpose) Not Like "*breaker*") AND (([API Count].Howmany)=1)) OR (((dbo_RegistryUploadPurpose.Purpose) Like "*guar*" And (dbo_RegistryUploadPurpose.Purpose) Not Like "*breaker*") AND (([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"));

树脂

SELECT dbo_RegistryUpload.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS Resin
FROM [API Count] INNER JOIN ((dbo_RegistryUpload INNER JOIN dbo_RegistryUploadPurpose ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON [API Count].APINumber = dbo_RegistryUpload.APINumber
WHERE (((dbo_RegistryUploadPurpose.Purpose) Like "*resin*") AND (([API Count].Howmany)=1)) OR ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.TradeName) Like "*RCS*"))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*"));

【问题讨论】：

“对于给定的 ID 代码，某些数据字段将为空白，但我仍然希望显示 ID 代码”听起来您应该阅读外部连接（左侧的 ms-access 文档/右加入：msdn.microsoft.com/en-us/library/bb208894(v=office.12).aspx)

【参考方案1】：

既然您已经编写了所有查询，为什么不将它们用作子查询并将它们连接在一起？

select dbo_RegistryUpload.APINumber, AvgOfTotalWater, WaterPerc
from (dbo_RegistryUpload as dbo_RegistryUpload
left join (SELECT dbo_RegistryUpload.APINumber, 

    Avg(dbo_RegistryUpload.TotalWater) AS AvgOfTotalWater
FROM (dbo_RegistryUpload AS dbo_RegistryUpload INNER JOIN (dbo_RegistryUploadPurpose INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON dbo_RegistryUpload.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN [API Count] ON dbo_RegistryUpload.APINumber = [API Count].APINumber
WHERE ((([API Count].Howmany)=1))
GROUP BY dbo_RegistryUpload.APINumber
HAVING (((dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*" Or (dbo_RegistryUpload.APINumber) Like "42*"))
) as atw on atw.APINumber = dbo_RegistryUpload.APINumber)

left join 

(SELECT dbo_RegistryUpload_1.APINumber, Sum(dbo_RegistryUploadIngredients.PercentHFJob) AS WaterPerc
FROM (dbo_RegistryUpload AS dbo_RegistryUpload_1 INNER JOIN (dbo_RegistryUploadPurpose INNER JOIN dbo_RegistryUploadIngredients ON dbo_RegistryUploadPurpose.pKey = dbo_RegistryUploadIngredients.pKeyPurpose) ON dbo_RegistryUpload_1.pKey = dbo_RegistryUploadPurpose.pKeyRegistryUpload) INNER JOIN [API Count] ON dbo_RegistryUpload_1.APINumber = [API Count].APINumber
WHERE (((dbo_RegistryUploadIngredients.IngredientName) Like "*base*") AND (([API Count].Howmany)=1)) OR (((dbo_RegistryUploadIngredients.IngredientName) Like "*Carrier*") AND (([API Count].Howmany)=1)) OR ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.Purpose) Like "*base*")) OR ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.Purpose) Like "*carrier*")) OR ((([API Count].Howmany)=1) AND ((dbo_RegistryUploadPurpose.Purpose) Like "*water*"))
GROUP BY dbo_RegistryUpload_1.APINumber
HAVING (((dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*" Or (dbo_RegistryUpload_1.APINumber) Like "42*"))
) as wp on wp.APINumber = dbo_RegistryUpload.APINumber

希望这能说明问题，对其余的查询执行相同的操作。

【讨论】：

在我的选择中，这将是最好的性能和最可扩展的选项——如果您需要添加额外的子查询，这很容易做到。此外，与十二个单独的查询相比，您可以更轻松地调整此查询。如果可以的话，最好在 tableau 之外处理这种聚合/数据连接。只需让 tableau 创建连接就可以增加额外的开销。只是我的 2 美分。

好的，谢谢！我不熟悉 atw / wp 语言，我在该特定行上遇到错误 - 你能详细说明吗？

@E Parker 当然！您能告诉我们您使用的是哪种 SQL 吗？我只是分配了一个表别名（atw 表示总水的平均值，wp 表示水百分比），我是基于 T-SQL（Microsoft SQL Server）编写的。如果您使用不同的品种，我可能会提供帮助。你能告诉我们错误信息是什么吗？

我正在使用 Access SQL。这是一个语法错误，atw.APINumber = dbo_RegistryUpload.APINumber 中缺少运算符

好吧，我觉得你需要用AS，例如：left join ([query]) AS [atw]