Even though you can change the Rows To Scan value in the ODBC Microsoft Excel Setup dialog box to something higher than 8 (but not higher than 16) this value is not being used by Excel. The ODBC thinks the column is all numbers and so any with alpha or other characters come through as blank.
ODBC EXCEL COLUMN TYPE DRIVER
The Microsoft Excel ODBC driver will, by default, scan the first 8 rows of your data to determine the type of data in each column.
ODBC EXCEL COLUMN TYPE CODE
If you will notice from the result of the SELECT statement above and from the previous page, the ZIP code for the first two records became NULL even though there is data from the Excel worksheet.The reason for this is because the OLE DB provider tries to 'guess' the data type of each column by sampling the first few records from the file. Your data may be truncated to 255 characters if the first 8 records for the field (s) being truncated contain 255 or fewer characters. Īny ideas? Table 2 is particularly confusing since its a super simple table and wasn't changed in any way. XML Converter quickly and easily converts source data types include the following: ODBC data sources Oracle tables or views MS SQL Server tables or views Microsoft Excel books MySQL tables or views Microsoft Access databases Microsoft Word documents Text files(csv, JSON, tab-delimited). Querying an Excel Worksheet With Mixed Data Type in Column.
ODBC EXCEL COLUMN TYPE DOWNLOAD
To download the client software, visit the following site. The 64-bit version of the Access Database Engine 2010 Access Database Engine OLEDB provider may be required to read this type of file. No indexing of ODBC tables (do not specify any columns as key). Currently, some restrictions apply to ODBC tables: Cursor type is forward only (sequential reading). TABLE 2 (this table did not change at all): OLE DB or ODBC error: Excel Workbook: The '.12.0' provider is not registered on the local machine. The type of the HIREDATE column was changed from timestamp to date and the type of the DEPTNO column was changed from char to integer. TABLE 1: OLE DB or ODBC error: The key didn't match any rows in the table. Today, I refreshed the data in the Excel file (loading new tables, combining them) and loaded it to the data model but when I try to refresh the data in PowerBI, I get these errors. The driver will not report any column to be larger than the MaximumColumnSize. If the two types are equally mixed in the column, the provider chooses numeric over text, and you lose all the text. You can set the MaximumColumnSize to overcome these schema-based restrictions. This is fine for a relational table but Excel often has mixed types in a column The ODBC Provider will try to return the data of the majority type, but return NULL values for the rest that won’t convert.
The driver does this by reading ahead 8 records and looking at the. The source files and the PowerQuery file I'm using for the data model are all saved to a SharePoint online folder as is the PBIX file. Some tools restrain the largest size of a column or the total size of all the columns selected. The Excel ODBC driver has to make an assumption about the data type for a given column. I have a PowerBI report that I built using Excel PowerQuery and loaded it all into the data model then into PowerBI.
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