如何插入“整个”使用 VBA 将 DAO 记录集转换为表

Question

我有一个 DAO 记录集，可以很好地创建，我可以将记录从该集传输到表中，这是逐行完成的并且效果很好，但是我一次传输大量数据，因此这可能需要很长时间一行一行。

有没有一种方法可以一次性传输整个记录集，而不是逐行传输

请参阅下面的当前使用的代码 -

Dim SendE1 As DAO.Recordset

Set SendE1 = CurrentDb.OpenRecordset("SELECT TBL_ImportTable.* FROM TBL_ImportTable", dbOpenDynaset)

SendE1.MoveLast

Do Until SendE1.EOF

sqlinsert = "INSERT INTO TBL_E1Jobs (StartDate, StartTime, EndDate, EndTime, Location, UserID, WorkStationID, DocumentNumber, E1Shift, OperSeq, Facility, AdjustedforShifts, WeekNum)" & _
" VALUES ('" & SendE1("StartDate") & "', '" & SendE1("StartTime") & "', '" & SendE1("EndDate") & "', '" & SendE1("EndTime") & "', '" & SendE1("Location") & "', '" & SendE1("UserID") & "', '" & SendE1("WorkstationID") & "', '" & SendE1("DocumentNumber") & "', '" & SendE1("E1Shift") & "', '" & SendE1("OperSeq") & "', '" & SendE1("Facility") & "', '" & SendE1("AdjustedforShifts") & "', '" & SendE1("WeekNum") & "') "

DoCmd.RunSQL (sqlinsert)

SendE1.MoveNext

Loop


SendE1.Close
Set SendE1 = Nothing

Answer 1

@ularis 是正确的。执行此操作的正确方法是使用 SQL 查询。阅读您对他的回答的评论后，您可以采取一些步骤来避免擦除尚未复制的数据：

Dim db As DAO.Database, RecCount As Long

'Get the total number of records in your import table to compare later
RecCount = DCount("*", "TBL_ImportTable")

'This line is IMPORTANT! each time you call CurrentDb a new db object is returned
'  that would cause problems for us later 
Set db = CurrentDb

'Add the records, being sure to use our db object, not CurrentDb
db.Execute "INSERT INTO TBL_E1Jobs (StartDate, StartTime, ..., WeekNum) " & _
           "SELECT StartDate, StartTime, ..., WeekNum " & _
           "FROM TBL_ImportTable", dbFailOnError

'db.RecordsAffected now contains the number of records that were inserted above
'  since CurrentDb returns a new db object, CurrentDb.RecordsAffected always = 0
If RecCount = db.RecordsAffected Then
    db.Execute "DELETE * FROM TBL_ImportTable", dbFailOnError
End If

请注意，如果您在链接的 ODBC 表上运行这些查询，则需要包含 dbSeeChanges 选项（即dbFailOnError + dbSeeChanges）。

Answer 2

不是 DAO，而是 SQL 解决方案，可以满足您的需求：

INSERT INTO TBL_E1Jobs  (StartDate, StartTime, EndDate ...) 
SELECT StartDate, StartTime, EndDate ... FROM TBL_ImportTable

插入...选择 MSDN