DELETE/UPDATE/INSERT statements is not allowed and will throw an exception. SELECT statements will always retrieve data from the cache. This improves connection performance.Įxcel File=C:\myExcelFile.xlsx Offline=true Query Passthrough=true The table metadata will also be cached instead of retrieving it from the data source. For example, to query cached data from the "Sheet" table, execute "SELECT * FROM ". To retrieve data from the cache, add "#Cache" to the table name. Pseudo column names (A,B,C) are used instead.Įxcel File=C:\myExcelFile.xlsx Cache Location=C:\cache.db Auto Cache=true net OleDbConnection will just pass on the connection string to the specified OLEDB provider.ĭriver= OdbcKey1=someValue OdbcKey2=someValue Įxcel File=C:\myExcelFile.xlsx Header=False See the respective OLEDB provider's connection strings options. Provider=any oledb provider's name OledbKey1=someValue OledbKey2=someValue If you try, you receive the following error message: "Could not decrypt file."
FREE ODBC DRIVER FOR MAC EXCEL 2016 PASSWORD
Use IMEX=0 instead to be sure to force the registry TypeGuessRows=0 (scan all rows) to work.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. Please also note that adding the IMEX=1 option might cause the IMEX feature to set in after just 8 rows. That's the key to not letting Excel use only the first 8 rows to guess the columns data type. excel worksheet name followed by a "$" and wrapped in "" brackets.Check out the located registry REG_DWORD "TypeGuessRows". Note that this option might affect excel sheet write access negative.SQL syntax "SELECT, FROM ".
FREE ODBC DRIVER FOR MAC EXCEL 2016 DRIVER
"HDR=No " indicates the opposite."IMEX=1 " tells the driver to always read "intermixed" (numbers, dates, strings etc) data columns as text. "HDR=Yes " indicates that the first row contains column names, not data.
OLEDB Provider=.4.0 Data Source=C:\MyExcel.xls Extended Properties="Excel 8.0 HDR=Yes IMEX=1"
Some reports that Excel 2003 need the exta OLEDB section in the beginning of the string. Try this one if the one above is not working.
Provider=.4.0 Data Source=C:\MyExcel.xls Įxtended Properties="Excel 8.0 HDR=Yes IMEX=1"
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