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  • How To Connect to Excel

    Excel  
    This is a compiled connection strings reference list on how to connect to Excel.


    ODBC

     
    Standard
       
     
    Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=C:\MyExcel.xls;DefaultDir=c:\mypath;
    SQL syntax "SELECT * FROM [sheet1$]". I.e. excel worksheet name followed by a "$" and wrapped in "[" "]" brackets.

     

    OLE DB
     
    Standard
       
    Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\MyExcel.xls;Extended Properties="Excel 8.0;HDR=Yes;IMEX=1"
    Important note!
    The quota " in the string needs to be escaped using your language specific escape syntax.
    c#, c++   \"
    VB6, VBScript   ""
    xml (web.config etc)   "
    or maybe use a single quota '.
    "HDR=Yes;" indicates that the first row contains columnnames, not data. "HDR=No;" indicates the opposite.
    "IMEX=1;" tells the driver to always read "intermixed" (numbers, dates, strings etc) data columns as text. Note that this option might affect excel sheet write access negative.
    SQL syntax "SELECT * FROM [sheet1$]". I.e. excel worksheet name followed by a "$" and wrapped in "[" "]" brackets.
    Check out the [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Jet\4.0\Engines\Excel] located registry REG_DWORD "TypeGuessRows". That's the key to not letting Excel use only the first 8 rows to guess the columns data type. Set this value to 0 to scan all rows. This might hurt performance.
    If the Excel workbook is protected by a password, you cannot open it for data access, even by supplying the correct password with your connection string. If you try, you receive the following error message: "Could not decrypt file."



    Sarah Ding Note:

    "IMEX=1;" tells the driver to always read "intermixed" data columns as text 
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  • 原文地址:https://www.cnblogs.com/amadeuslee/p/3744566.html
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