DBEngine(0)(0).Execute DELETE 在 APPEND 之前完成

Question

我在 VBA 中有两个陈述。这是一段代码：

'delete records from tbl_PLAN_data 
 strErr = "1a"
    strSQL = "DELETE tbl_PLAN_data.*"
    strSQL = strSQL & " FROM tbl_PLAN_data;"
DBEngine(0)(0).Execute strSQL, dbFailOnError + dbSeeChanges
DoEvents

strErr = "2a"
'append records to tbl_PLAN_data
DBEngine(0)(0).Execute "qryAppPLAN", dbFailOnError + dbSeeChanges
DoEvents

SQL qryAppPLAN 字符串：

INSERT INTO tbl_PLAN_data ( ID, Qty, QtyPln, QtyAct, ProdT, TmStamp, TID, Wks, vol, v4, v4k, DataPln, Shift, DataPlnShift, GRD, Wk, Wkd, GRDLdKf, KFig )
SELECT tbl_OrderDetailsSub.OrderDetailsSubID, [Quantity]-Sum(Nz([Qtyact],0)*IIf([np]=0,1,-1)) AS Qty, tbl_OrderDetails.Quantity, Sum(Nz([Qtyact],0)*IIf([np]=0,1,-1)) AS QA, Sum(tbl_OrderDetailsSub.PT) AS SumOfPT, Now() AS TmStamp, tbl_OrderDetailsSub.TID, tbl_Tooling.WksID, tbl_OrderDetailsSub.Volume, tbl_OrderDetailsSub.Vol4, tbl_OrderDetailsSub.Vol4K, tbl_OrderDetailsSub.DataPln, tbl_OrderDetailsSub.Shift, [datapln] & "-" & [shift] AS datshift, IIf(InStr([oprdetails],"G")>0 Or InStr([oprdetails],"Hs")>0 And InStr([oprdetails],"GL")=0,1,0) AS GRD, DatePart("ww",[DataPln],0,2) AS w, DatePart("w",[DataPln],0,2) AS wd, tbl_OrderDetailsSub.TblLoadKf, Nz([Koef],1) AS Expr1
FROM ((tbl_Order INNER JOIN (tbl_OrderDetails INNER JOIN tbl_OrderDetailsSub ON tbl_OrderDetails.[OrderDetailsID] = tbl_OrderDetailsSub.[OrderDetailsID]) ON tbl_Order.[OrderID] = tbl_OrderDetails.[OrderID]) LEFT JOIN tbl_ProdAct ON tbl_OrderDetailsSub.[OrderDetailsSubID] = tbl_ProdAct.ODSubID) INNER JOIN tbl_Tooling ON tbl_OrderDetailsSub.TID = tbl_Tooling.TID
WHERE (((tbl_Order.ProdTypeID)<>"S" Or (tbl_Order.ProdTypeID) Is Null) AND ((tbl_Order.CancelledDate) Is Null) AND ((tbl_Order.RefusingReason) Is Null) AND ((Right(CStr(Nz([tbl_Order]![ProcessedDate],"12:00:00")),8))="12:00:00") AND ((tbl_Order.OrderType)<>"Pasiûlymas") AND ((tbl_Order.ShippedDate) Is Null))
GROUP BY tbl_OrderDetailsSub.OrderDetailsSubID, tbl_OrderDetails.Quantity, tbl_OrderDetailsSub.TID, tbl_Tooling.WksID, tbl_OrderDetailsSub.Volume, tbl_OrderDetailsSub.Vol4, tbl_OrderDetailsSub.Vol4K, tbl_OrderDetailsSub.DataPln, tbl_OrderDetailsSub.Shift, [datapln] & "-" & [shift], IIf(InStr([oprdetails],"G")>0 Or InStr([oprdetails],"Hs")>0 And InStr([oprdetails],"GL")=0,1,0), DatePart("ww",[DataPln],0,2), DatePart("w",[DataPln],0,2), tbl_OrderDetailsSub.TblLoadKf, Nz([Koef],1), tbl_OrderDetails.Quantity
HAVING ((([Quantity]-Sum(Nz([Qtyact],0)*IIf([np]=0,1,-1)))>0) AND ((tbl_OrderDetailsSub.DataPln)>Date()-30))
ORDER BY tbl_OrderDetailsSub.DataPln;

有时在第二个执行语句时出现错误 "Record is deleted"。当我在删除后追加记录时，这似乎是合乎逻辑的。但是如何强制 VBA 等到 delete 语句完成？

Answer 1

我建议您创建一个数据库对象并在该对象上执行，而不是使用 DBEngine(0)(0)，因为当您使用它时，您不仅要执行创建数据库新实例的昂贵操作，您还试图查询刚刚修改（删除）的 table，因此您可能会遇到小故障。

Dim dbObj As DAO.Database

Set dbObj = CurrentDB()
'delete records from tbl_PLAN_data 
strErr = "1a"
strSQL = "DELETE tbl_PLAN_data.* FROM tbl_PLAN_data;"

dbObj.Execute strSQL, dbFailOnError + dbSeeChanges

'Optional
'DoEvents

strErr = "2a"
'append records to tbl_PLAN_data
dbObj.Execute "qryAppPLAN", dbFailOnError + dbSeeChanges

通过创建数据库对象，您可以确保针对您也进行了修改的 "active" 对象进行操作，因此 return 您可以获得正确的信息。 DoEvents 甚至可能不需要。我已经添加了，如果你觉得还是有问题，再介绍一下，看看有没有什么不同。

祝你好运！

DBEngine(0)(0).Execute DELETE 在 APPEND 之前完成

DBEngine(0)(0).Execute DELETE to complete before APPEND

ms-access

vba

ms-access-2010