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How To Connect to Excel

芷兮离离 2022-10-12 阅读 136

 

 

ODBC

 

Standard

 

 

Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=C:\MyExcel.xls;DefaultDir=c:\mypath;


Excel

 

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

 

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:

How To Connect to Excel_sql

"IMEX=1;" tells the driver to always read "intermixed" data columns as text 

 


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