添加 NOT LIKE 条件后查询返回的结果太少

我的 Access 2010 数据库在我稍微更改用户请求的查询时表现得很奇怪。我有一个非常大的表（不要问），查询在其上运​​行，然后提供给用户输入表单。不管怎样，今天，一种特殊的形式开始返回的结果比我们预期的要少得多。它通常会返回大约 1200 个结果，但经过细微更改后，结果下降到 880 个。当我检查时，它应该只下降到 1100，所以我错过了额外的 300 个预期结果。

我分层构建对此表的查询，以防止事情变得太奇怪。我不太擅长 sql，所以我通常只使用设计视图进行构建。如果有必要的话，我可以用 sql 蒙混过关。

这是第一层的SQL

SELECT [New ZSPWAR Prime].Payer, [New ZSPWAR Prime].Bill_doc, [New ZSPWAR Prime].Sqwak, [New ZSPWAR Prime].Billing_Dt, [New ZSPWAR Prime].Issued_Material, [New ZSPWAR Prime].Serial_No, [New ZSPWAR Prime].[review date], [New ZSPWAR Prime].Mtrl_Qty_Billed, [New ZSPWAR Prime].PO_DT, [New ZSPWAR Prime].PO_NO, [New ZSPWAR Prime].PO_PI, [New ZSPWAR Prime].INV_PT_DT, [New ZSPWAR Prime].[Warr Typ], [New ZSPWAR Prime].Stage, [New ZSPWAR Prime].Returned_Material, [New ZSPWAR Prime].Returned_SNR, [New ZSPWAR Prime].Ret_EQUI, [New ZSPWAR Prime].Sales_Ord, [New ZSPWAR Prime].SVO_No, [New ZSPWAR Prime].[ME23N PO_Owner], [New ZSPWAR Prime].Ret_Note, [New ZSPWAR Prime].Ret_Date, [New ZSPWAR Prime].Ret_Note_DESC, [New ZSPWAR Prime].WACD, [New ZSPWAR Prime].Wty_Prog_Code_Desc, [New ZSPWAR Prime].VR_Amount, [New ZSPWAR Prime].Freight_Amt, [New ZSPWAR Prime].VDCD, [New ZSPWAR Prime].Ven_Den_Code_Desc, [New ZSPWAR Prime].ZZ07, [New ZSPWAR Prime].[root cause] AS [Email Follow Up], [New ZSPWAR Prime].[Step 1 Complete], [New ZSPWAR Prime].[Step 1 notes], [New ZSPWAR Prime].[Step 2 complete], [New ZSPWAR Prime].[step 2 notes], [New ZSPWAR Prime].[Step 3 complete], [New ZSPWAR Prime].[step 3 notes], [New ZSPWAR Prime].[Push INV_PMT], [New ZSPWAR Prime].[PO Due Date]
FROM [New ZSPWAR Prime]
WHERE ((([New ZSPWAR Prime].Payer) Not Like "10208" And ([New ZSPWAR Prime].Payer) Not Like "2300" And ([New ZSPWAR Prime].Payer) Not Like "32770") AND (([New ZSPWAR Prime].Billing_Dt)>#7/1/2016#) AND (([New ZSPWAR Prime].Mtrl_Qty_Billed)>0) AND (([New ZSPWAR Prime].PO_NO) Not Like "" And ([New ZSPWAR Prime].PO_NO) Is Not Null) AND (([New ZSPWAR Prime].[Step 3 complete])<>Yes));

这是第二个：

SELECT [Day2Day InvPmt a].Payer, [Day2Day InvPmt a].Bill_doc, [Day2Day InvPmt a].Sqwak, [Day2Day InvPmt a].Billing_Dt, [Day2Day InvPmt a].Issued_Material, [Day2Day InvPmt a].Serial_No, [Day2Day InvPmt a].[review date], [Day2Day InvPmt a].Mtrl_Qty_Billed, [Day2Day InvPmt a].PO_DT, [Day2Day InvPmt a].PO_NO, [Day2Day InvPmt a].PO_PI, [Day2Day InvPmt a].INV_PT_DT, [Day2Day InvPmt a].[Warr Typ], [Day2Day InvPmt a].Stage, [Day2Day InvPmt a].Returned_Material, [Day2Day InvPmt a].Returned_SNR, [Day2Day InvPmt a].Ret_EQUI, [Day2Day InvPmt a].Sales_Ord, [Day2Day InvPmt a].SVO_No, [Day2Day InvPmt a].[ME23N PO_Owner], [Day2Day InvPmt a].Ret_Note, [Day2Day InvPmt a].Ret_Date, [Day2Day InvPmt a].Ret_Note_DESC, [Day2Day InvPmt a].WACD, [Day2Day InvPmt a].Wty_Prog_Code_Desc, [Day2Day InvPmt a].VR_Amount, [Day2Day InvPmt a].Freight_Amt, [Day2Day InvPmt a].VDCD, [Day2Day InvPmt a].Ven_Den_Code_Desc, [Day2Day InvPmt a].ZZ07, [Day2Day InvPmt a].[Email Follow Up], [Day2Day InvPmt a].[Step 1 Complete], [Day2Day InvPmt a].[Step 1 notes], [Day2Day InvPmt a].[Step 2 complete], [Day2Day InvPmt a].[step 2 notes], [Day2Day InvPmt a].[Step 3 complete], [Day2Day InvPmt a].[step 3 notes], [Day2Day InvPmt a].[Push INV_PMT], [Day2Day InvPmt a].[PO Due Date]
FROM [Day2Day InvPmt a]
WHERE ((([Day2Day InvPmt a].INV_PT_DT) Is Null) AND (([Day2Day InvPmt a].[Step 1 notes]) Not Like "*" & "windsh*")) OR ((([Day2Day InvPmt a].INV_PT_DT) Like "") AND (([Day2Day InvPmt a].[Step 1 notes]) Not Like "*" & "windsh*"))
ORDER BY [Day2Day InvPmt a].Bill_doc;

罪魁祸首就在这里：

WHERE ((([Day2Day InvPmt a].INV_PT_DT) Is Null) AND (([Day2Day InvPmt a].[Step 1 notes]) Not Like "*" & "windsh*")) OR ((([Day2Day InvPmt a].INV_PT_DT) Like "") AND (([Day2Day InvPmt a].[Step 1 notes]) Not Like "*" & "windsh*"))

排除“windsh*”的部分是最近添加的，也是混乱的根源。

在添加这一点之前，我得到了 1200 的回报。之后，我得到 880。我尝试反向构建这个，只有 100 个或应该被过滤掉，我不知道为什么要这样做。有什么想法吗？或者这个问题在其他地方已经得到解答了吗？

提前致谢

The Not Like运算符不匹配 Null 值，即使 Null 值显然与模式不匹配。您需要显式（重新）包含 Null。

在标准网格的设计视图中，您输入类似的内容

Not Like "*windsh*" Or Is Null

SQL 语句中应该类似于

(([Day2Day InvPmt a].[Step 1 notes]) Not Like "*windsh*" Or ([Day2Day InvPmt a].[Step 1 notes]) Is Null)