Question

我需要优化以下查询。我知道这不是实现这一目标的方法。

查询

 SELECT 'A1' AS Location , A1 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A2' AS Location , A2 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A3' AS Location , A3 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A4' AS Location , A4 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A5' AS Location , A5 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A6' AS Location , A6 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A7' AS Location , A7 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A8' AS Location , A8 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A9' AS Location , A9 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A10' AS Location , A10 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A11' AS Location , A11 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A12' AS Location , A12 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A13' AS Location , A13 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A14' AS Location , A14 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'A15' AS Location , A15 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B1' AS Location , B1 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B2' AS Location , B2 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B3' AS Location , B3 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B4' AS Location , B4 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B5' AS Location , B5 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B6' AS Location , B6 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B7' AS Location , B7 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B8' AS Location , B8 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B9' AS Location , B9 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B10' AS Location , B10 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B11' AS Location , B11 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B12' AS Location , B12 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B13' AS Location , B13 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B14' AS Location , B14 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'B15' AS Location , B15 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C1' AS Location , C1 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C2' AS Location , C2 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C3' AS Location , C3 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C4' AS Location , C4 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C5' AS Location , C5 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C6' AS Location , C6 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C7' AS Location , C7 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C8' AS Location , C8 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C9' AS Location , C9 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C10' AS Location , C10 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C11' AS Location , C11 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C12' AS Location , C12 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C13' AS Location , C13 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C14' AS Location , C14 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'C15' AS Location , C15 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D1' AS Location , D1 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D2' AS Location , D2 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D3' AS Location , D3 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D4' AS Location , D4 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D5' AS Location , D5 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D6' AS Location , D6 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D7' AS Location , D7 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D8' AS Location , D8 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D9' AS Location , D9 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D10' AS Location , D10 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D11' AS Location , D11 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D12' AS Location , D12 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D13' AS Location , D13 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D14' AS Location , D14 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1 UNION ALL 
 SELECT 'D15' AS Location , D15 AS Qty FROM Inventory where PartNumber='1038305320' AND Version =1

TAble结构

Partnumber  Version Quantity A1 A2......A15 B1 B2.....B15 .......D15

我希望输出像这样

A1-10
A2-10
..
..
D15-10

在Access中显示查询太高了..请帮我优化一下

Answer 1

你真正想要的是什么叫做“univoting＆＃39;”。不幸的是，没有办法解开＆＃39; MS-Access中的信息。你是正确的union all是在MS-Access中实现这一点的唯一方法。

你可以从这里采取不同的方式：

您可以使用列（SELECT * ...）制作报告并进行复制结果到MS-Excel，您可以在其中翻转生成的矩阵复制粘贴（转置）动作。
您可以将MS-Access数据库链接到可以执行“无法转移”的后端数据库。命令。我是用MS-SQLserver做的。
您可以按照

Partnumber Version Location Quantity 1038305320 1 A1 10 1038305320 1 A2 15

创建仅包含位置的视图，然后在视图可用时选择partnumber和version

CREATE VIEW storageLocations as SELECT 'A1' AS Location , A1 AS Qty FROM Inventory UNION ALL SELECT 'A2' AS Location , A2 AS Qty FROM Inventory UNION ALL SELECT 'A3' AS Location , A3 AS Qty FROM Inventory UNION ALL SELECT 'A4' AS Location , A4 AS Qty FROM Inventory UNION ALL SELECT 'A5' AS Location , A5 AS Qty FROM Inventory UNION ALL SELECT 'A6' AS Location , A6 AS Qty FROM Inventory UNION ALL SELECT 'A7' AS Location , A7 AS Qty FROM Inventory UNION ALL SELECT 'A8' AS Location , A8 AS Qty FROM Inventory ...

接着是

SELECT * FROM storageLocations WHERE PartNumber='1038305320' AND Version =1

但是您在＆＃39; UNION ALL＆＃39;中包含的列数。 MS-Acces可能仍会抱怨大小...

如果您可以影响MS-Access的直接环境，我的建议是选择2或3选项。

对于Access 2013，查询过高

1 个答案: