Ms access 使用Vbscript将记录批量插入Access
我真的很喜欢这个。我有一个vbscript,我正试图将几十万条记录插入Access数据库 显然,如果我一次只做一个,速度会非常慢,所以我想我可以通过某种事务批量插入它们。所以我试着写下:Ms access 使用Vbscript将记录批量插入Access,ms-access,vbscript,ado,Ms Access,Vbscript,Ado,我真的很喜欢这个。我有一个vbscript,我正试图将几十万条记录插入Access数据库 显然,如果我一次只做一个,速度会非常慢,所以我想我可以通过某种事务批量插入它们。所以我试着写下: set rs = CreateObject("ADODB.recordset") rs.Open "table", objConn,, 4 For counter = 1 to 100000 rs.AddNew rs("username") = "Value" Next rs.UpdateBa
set rs = CreateObject("ADODB.recordset")
rs.Open "table", objConn,, 4
For counter = 1 to 100000
rs.AddNew
rs("username") = "Value"
Next
rs.UpdateBatch
(objConn是数据库连接)
问题是我得到一个错误,说:
“具有挂起更改的行数超出了限制”
当有不止一个待定的变更时,我就知道了
我想我的交易设置不正确,但我有点卡住了。难道没有人能指出我的错误吗?非常感谢。如果您正在使用OLEDB,则需要根据以下KB文章将CursorLocation属性设置为AdusClient:
你也可以考虑在较小的批次中运行,如果一次做100K慢,
编辑:是的,adUseClient需要定义为=3,或者只是在它的位置使用数字3。为了支持我在事务中使用命令的建议,我写道 此脚本:
Dim sAct : sAct = "trout"
If goWAN.Exists( "a" ) Then sAct = goWAN( "a" )
Dim nRecs : nRecs = 10
If goWAN.Exists( "n" ) Then nRecs = CLng( goWAN( "n" ) )
Dim sMFSpec : sMFSpec = goFS.GetAbsolutePathName( "..\data\ut.mdb" )
Dim oConn : Set oConn = CreateObject( "ADODB.Connection" )
Dim oRs : Set oRs = CreateObject( "ADODB.Recordset" )
Dim nRec, oCmd, nRA, aData, oParm
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & sMFSpec
Set oRs.ActiveConnection = oConn
oConn.Execute( "DELETE FROM tLines" )
WScript.Echo "#Recs:", oConn.Execute( "SELECT COUNT(SampleText) FROM tLines" ).Fields( 0 )
WScript.Echo sAct
Select Case sAct
Case "trout"
Case "bob"
oRs.CursorLocation = adUseClient
oRs.CursorType = adOpenKeySet
oRs.LockType = adLockBatchOptimistic
Case "eh"
End Select
WScript.Echo "oRs.CursorLocation: ", oRs.CursorLocation
WScript.Echo "oRs.CursorType: ", oRs.CursorType
WScript.Echo "oRs.LockType: ", oRs.LockType
Select Case sAct
Case "trout", "bob"
oRs.Open "tLines", oConn, , adLockBatchOptimistic
For nRec = 1 to nRecs
oRs.AddNew
oRs( "SampleText" ) = "This is line " & nRec
Next
oRs.UpdateBatch
oRs.Close
Case "eh"
oConn.BeginTrans
Set oParm = CreateObject( "ADODB.Parameter" )
With oParm
.Name = "A"
.Type = adVarChar
.Value = ""
.Direction = adParamInput
.Size = 100
End With
Set oCmd = CreateObject( "ADODB.Command" )
With oCmd
Set .ActiveConnection = oConn
.CommandText = "INSERT INTO tLines (SampleText) VALUES (?)"
.CommandType = adCmdText
.Parameters.Append oParm
End With
ReDim aData( 0 )
For nRec = 1 to nRecs
aData( 0 ) = "This is line " & nRec
oCmd.Execute nRA, aData, adExecuteNoRecords + adCmdText
Next
oConn.CommitTrans
End Select
WScript.Echo "#Recs:", oConn.Execute( "SELECT COUNT(SampleText) FROM tLines" ).Fields( 0 )
WScript.Echo "First:", oConn.Execute( "SELECT TOP 1 * FROM tLines" ).Fields( 0 )
oConn.Close
用/n:200和/a:trout调用,显示:
#Recs: 0
trout
oRs.CursorLocation: 2
oRs.CursorType: 0
oRs.LockType: 1
... xpl.vbs(246, 11) Provider: Number of rows with pending changes exceeded the limit.
所以我想,我正确地再现了你的问题。对于/a:bob:
#Recs: 0
bob
oRs.CursorLocation: 3
oRs.CursorType: 1
oRs.LockType: 4
#Recs: 200
First: This is line 1
xpl.vbs: Erfolgreich beendet. (0) [ 19.74219 secs ]
所以设置
oRs.CursorLocation = adUseClient
oRs.CursorType = adOpenKeySet
oRs.LockType = adLockBatchOptimistic
正如Bob(和Microsoft)所建议的,这是解决您问题的一种方法。为了加快速度,我放了一个
将命令导入事务:
oConn.BeginTrans
Set oCmd = CreateObject( "ADODB.Command" )
...
ReDim aData( 0 )
For nRec = 1 to nRecs
aData( 0 ) = "This is line " & nRec
oCmd.Execute nRA, aData, adExecuteNoRecords + adCmdText
Next
oConn.CommitTrans
结果:
#Recs: 0
eh
oRs.CursorLocation: 2
oRs.CursorType: 0
oRs.LockType: 1
#Recs: 200
First: This is line 1
xpl.vbs: Erfolgreich beendet. (0) [ 1.47656 secs ]
从20秒到2秒(没有任何属性篡改)对我来说似乎不坏。因此我看到了那篇文章,并尝试添加:rs.CursorLocation=adUseClient,但我得到了一个错误,说“参数类型错误,超出了可接受的范围,或者相互冲突”我不知道是什么原因造成的。事实上,我认为这可能是答案,但出于某种原因,“rs.CursorLocation=adUseClient”不起作用,我不得不使用“rs.CursorLocation=3”让我来测试一下……也许考虑在数据库中烧一堆INSERT语句而不是使用记录集对象?从哪里获取记录?外部源(文件?)?还是在内存中生成?它们是在内存中生成的。如果你觉得有帮助的话,我可以先把它们写进一个文件,但这不是做这类事情的正确方法。哦,太棒了!非常感谢。非常感谢你在这方面所做的工作。我的剧本花了很长时间,我可以泡杯茶回来,但它仍然会运行到5秒左右。