Question

我有3个数据库（下面分开的实际查询）我一起查询了联合。我试图在3个基于MFG PART NO的3个中获得最低成本。一个常见的是MFG PART NO，所以我希望这样，以及所有3个供应商的最低价格。我创建了一个联合查询，如下所示：

SELECT INGRAM.[MFG NAME], INGRAM.[MFG PART NO], INGRAM.[DESCRIPT 1] AS DESCRIPTION, INGRAM.Cost, INGRAM.MLP AS [LIST PRICE], INGRAM.[INGRAM PARTNO] AS [VENDOR SKU], INGRAM.LGTH AS COO
FROM INGRAM

UNION ALL 

SELECT [SYNNEX CURRENT].[MFG NAME], [SYNNEX CURRENT].[MFG PART NO], [SYNNEX CURRENT].[Part Description] AS DESCRIPTION, [SYNNEX CURRENT].Cost, [SYNNEX CURRENT].MSRP AS [LIST PRICE], [SYNNEX CURRENT].[SYNNEX SKU] AS [VENDOR SKU], [SYNNEX CURRENT].[Country of Origin] AS COO
FROM [SYNNEX CURRENT]

UNION ALL 

SELECT [Digitek Product Catalog].Manufacturer AS [MFG NAME], [Digitek Product Catalog].[Part No] AS [MFG PART NO], [Digitek Product Catalog].Description AS DESCRIPTION, [Digitek Product Catalog].[Unit Price] AS Cost, [Digitek Product Catalog].[List Price], [Digitek Product Catalog].[Part No] AS [VENDOR SKU], [Digitek Product Catalog].[Country Of Origin] AS COO
FROM [Digitek Product Catalog]
ORDER BY [MFG PART NO];

这将所有目录合并为一个。

然后我运行另一个查询尝试从成本列中获取最小值，但由于MFG NAME列包含同一制造商的不同名称（取决于供应商），因此VENDOR SKU也不同。

我想要一个显示我所有信息的结果，但只返回相同MFG PART NO常用项目中的最佳费用。

Answer 1

您可以使用前1个查询来完成此操作。

Select TOP 1 * FROM <yourunionquery> ORDER BY Cost

如果有多个价格相同，您将获得多行。在这种情况下，只需在排序中添加另一个字段即可。例如。按成本排序，[MFG名称]

仅使用部件号和成本显示项目在各种数据库中的最低成本

1 个答案: