MS Access窗体（VBA）查询和定期查询给出不同的结果

Question

我基本上在MS Access中通过VBA代码&查询只是一个保存的查询。这基本上是相同的查询，但VBA代码缺少两个记录，应该包含符合条件的&。保存的查询返回相同的数据集和VBA未返回的两个“缺失”记录。

保存的查询SQL：

SELECT ID.Company, CU.GroupCode, CU.CustID, CU.Name, ST.ShipToNum, ST.Name, IH.InvoiceDate, IH.InvoiceNum, ID.ProdCode, ID.PartNum 
FROM ((((PUB_InvcDtl AS ID INNER JOIN PUB_InvcHead AS IH ON (ID.CustNum = IH.CustNum) AND (ID.InvoiceNum = IH.InvoiceNum) AND (ID.Company = IH.Company)) LEFT JOIN PUB_Part AS PT ON (ID.Company = PT.Company) AND (ID.PartNum = PT.PartNum)) LEFT JOIN PUB_ShipTo AS ST ON (ID.CustNum = ST.CustNum) AND (ID.ShipToNum = ST.ShipToNum) AND (ID.Company = ST.Company)) LEFT JOIN V_Customer AS CU ON (ID.Company = CU.Company) AND (ID.CustNum = CU.CustNum)) LEFT JOIN ProdCodeCommRate AS PCC ON ID.ProdCode = PCC.ProdCode 
WHERE (((ID.Company)="BTN") AND ((IH.InvoiceDate) Between #1/1/2013# And #1/31/2013#) AND ((ID.ProdCode) In ('2100','2110','2200','2210','2300','2400','2405','2500','2600','2701','2702','2709','2710','2800','2901','2902','2903')) AND ((ID.PartNum)<>'')); 

VBA查询：

"SELECT ID.Company, CU.GroupCode, CU.CustID, CU.Name AS CustName, ST.ShipToNum, ST.Name AS ShipToName, IH.InvoiceDate, IH.InvoiceNum, ID.InvoiceLine, ID.PartNum, " & _ 
     "ID.ProdCode, PCC.CommRate, ID.PricePerCode, PT.PartDescription, ID.IUM, PT.CostMethod, ID.UnitPrice, ID.OurShipQty, ID.ExtPrice, ID.Discount, [ExtPrice]-[Discount] AS NetPrice, " & _ 
     "ID.LbrUnitCost, ID.BurUnitCost, ID.MtlUnitCost, ID.SubUnitCost, [LbrUnitCost]+[BurUnitCost]+[MtlUnitCost]+[SubUnitCost] AS TotUnitCost, " & _ 
     "([LbrUnitCost]+[BurUnitCost]+[MtlUnitCost]+[SubUnitCost])*[OurShipQty] AS ExtTotCost, IH.OpenInvoice, getSalesRep([IH].[SalesRepList],1,ID.Company) AS SalesRep1, ID.RepRate1, " & _ 
     "ID.RepSplit1, getSalesRep([IH].[SalesRepList],2,ID.Company) AS SalesRep2, ID.RepRate2, ID.RepSplit2, getSalesRep([IH].[SalesRepList],3,ID.Company) AS SalesRep3, " & _ 
     "ID.RepRate3, ID.RepSplit3 " & _ 
     "FROM (((((PUB_InvcDtl AS ID " & _ 
     "INNER JOIN PUB_InvcHead AS IH ON (ID.CustNum = IH.CustNum) AND (ID.InvoiceNum = IH.InvoiceNum) AND (ID.Company = IH.Company)) " & _ 
     "LEFT JOIN PUB_Part AS PT ON (ID.Company = PT.Company) AND (ID.PartNum = PT.PartNum))" & _ 
     "LEFT JOIN PUB_ShipTo AS ST ON (ID.CustNum = ST.CustNum) AND (ID.ShipToNum = ST.ShipToNum) AND (ID.Company = ST.Company))" & _ 
     "LEFT JOIN V_Customer AS CU ON (ID.Company = CU.Company) AND (ID.CustNum = CU.CustNum))" & _ 
     "LEFT JOIN ProdCodeCommRate AS PCC ON ID.ProdCode = PCC.ProdCode)" & _ 
     "WHERE ((ID.Company)=[Forms]![frmSalesMgnAnalysis]![cboComp]) AND ((ID.PartNum)<>'') AND " & _ 
     "((IH.InvoiceDate) Between [Forms]![frmSalesMgnAnalysis]![dtStart] And [Forms]![frmSalesMgnAnalysis]![dtEnd]) AND " & _ 
     "((ID.ProdCode) IN ('2100','2110','2200','2210','2300','2400','2405','2500','2600','2701','2702','2709','2710','2800','2901','2902','2903'))" & _ 
     "ORDER BY ID.ProdCode, IH.InvoiceDate, CU.Name;" 

的形式是使用输入域公司，开始&结束日期，& ProdCodes。 ProdCodes位于包含ProdCode，Desc，&公司（位于VBA一侧的表格中）的表单中的列表框中。这个VBA代码返回我需要的所有记录，除了2条缺失的记录外。无论我是否加入上面的ProdCode VBA表，在WHERE中使用WHERE ID.ProdCode IN（Select distinct ......）等选择它都不会起作用。

想法？提前致谢！！！

Answer 1

您的WHERE子句不相同（因为括号不在两个查询之间的相同位置）。我怀疑你可能会遇到问题，特别是该条款的ID.PartNum<>''部分。

您可以尝试在VBA代码中设置断点并获取VBA查询的实际解释输出（包括参数值）。将该SQL语句复制到新的查询窗口（SQL视图）中，然后查看设计器以查看Access如何解释该语句。

您也可以尝试在VBA查询中匹配where子句以匹配参数的相同顺序和括号的数量，但是在使用设计器之前首先证明\反驳我的假设可能更容易VBA查询。

经常遇到像这样的问题，需要逐句回答，然后逐渐将其添加回来以准确找到问题发生的位置，但括号的用法是我开始调查的地方。