使用 ADO 文本文件时,应从表定义开始
在适当的 schema.ini 文件中:
[agree.txt]
Format=Delimited(^)
ColNameHeader=True
DecimalSymbol=.
CharacterSet=ANSI
TextDelimiter=None
Col1=AGREE CHAR
Col2=NAME CHAR
Col3=ADD1 CHAR
Col4=ADD2 CHAR
Col5=ADD3 CHAR
Col6=ADD4 CHAR
Col7=PCODE CHAR
Col8=BAL FLOAT
Col9=ARREARS FLOAT
然后你就可以访问你的数据了:
Dim sTDir : sTDir = goFS.GetAbsolutePathName( "..\data" )
Dim sTbl1 : sTbl1 = "agree.txt"
Dim sFSpec : sFSpec = goFS.BuildPath(sTDir, sTbl1)
Dim sTbl2 : sTbl2 = "agree2.txt"
WScript.Echo "src file with spaces:"
WScript.Echo goFS.OpenTextFile(sFSpec).ReadAll()
Dim oTDb : Set oTDb = CreateObject( "ADODB.Connection" )
Dim sCS : sCS = Join( Array( _
"Provider=Microsoft.Jet.OLEDB.4.0" _
, "Data Source=" & sTDir _
, "Extended Properties=" & Join( Array( _
"text" _
), ";" ) _
), ";" )
oTDB.Open sCS
WScript.Echo "trimmed automagically:"
WScript.Echo oTDb.Execute(Replace("SELECT * FROM [@T]", "@T", sTbl1)) _
.GetString( adClipString, , "|", vbCrLf, "" )
输出:
src file with spaces:
AGREE^NAME^ADD1^ADD2^ADD3^ADD4^PCODE^BAL^ARREARS
00010004000051162^MISS JENNIFER GRAY ^123 FAKE STREET ^ ^TOWN ^COUNTY ^POSTCODE ^ 004978.00^ 000188.72
trimmed automagically:
00010004000051162|MISS JENNIFER GRAY|123 FAKE STREET||TOWN|COUNTY|POSTCODE|4978|188,72
如您所见,如果您使用
正确的工具。
要获得干净的副本,只需添加
sFSpec = goFS.BuildPath(sTDir, sTbl2)
If goFS.FileExists(sFSpec) Then goFS.DeleteFile sFSpec
Dim sSQL : sSQL = Replace(Replace( _
"SELECT * INTO [@T2] FROM [@T1]" _
, "@T1", sTbl1), "@T2", sTbl2)
WScript.Echo "Copy statement"
WScript.Echo sSQL
oTDb.Execute sSQL
WScript.Echo "QED: no spurious whilespace"
WScript.Echo goFS.OpenTextFile(sFSpec).ReadAll()
输出:
Copy statement
SELECT * INTO [agree2.txt] FROM [agree.txt]
QED: no spurious whilespace
"AGREE";"NAME";"ADD1";"ADD2";"ADD3";"ADD4";"PCODE";"BAL";"ARREARS"
"00010004000051162";"MISS JENNIFER GRAY";"123 FAKE STREET";;"TOWN";"COUNTY";"POSTCODE";4978,00;188,72
驱动会添加
[agree2.txt]
ColNameHeader=True
CharacterSet=1252
Format=Delimited(;)
Col1=AGREE Char Width 255
Col2=NAME Char Width 255
Col3=ADD1 Char Width 255
Col4=ADD2 Char Width 255
Col5=ADD3 Char Width 255
Col6=ADD4 Char Width 255
Col7=PCODE Char Width 255
Col8=BAL Float
Col9=ARREARS Float
(德国语言环境默认值)到 schema.ini;将其编辑为
[agree2.txt]
Format=Delimited(^)
ColNameHeader=True
DecimalSymbol=.
CharacterSet=ANSI
TextDelimiter=None
Col1=AGREE CHAR
...
重新创建您的原始格式:
QED: no spurious whilespace
AGREE^NAME^ADD1^ADD2^ADD3^ADD4^PCODE^BAL^ARREARS
00010004000051162^MISS JENNIFER GRAY^123 FAKE STREET^^TOWN^COUNTY^POSTCODE^4978.00^188.72
通过使用更精细的 SQL 语句和/或增强表定义,您可以直接解决更复杂的任务。
附言
看here,如果
Dim sSQL : sSQL = Replace(Replace( _
"SELECT * INTO [@T2] FROM [@T1]" _
, "@T1", sTbl1), "@T2", sTbl2)
让你想知道(@T1 和@T2 不是 ADO 命令参数;嵌套的 Replace() 调用 apply before ADO 看到 then 修改的语句)。