Microsoft KB Archive/248454

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Knowledge Base

FIX: Access Violation May Occur with BCP when Skipping a Column from Input Data File

Article ID: 248454

Article Last Modified on 3/14/2006


  • Microsoft SQL Server 7.0 Standard Edition

This article was previously published under Q248454

BUG #: 54557 (SQLBUG_70)


An access violation may occur in the ODBC SQL Server driver if an application attempts to skip a column from the input data file using the bcp_colfmt function.


Extract out any column you need to skip from the input data file before bulk copying into the database.


Microsoft has confirmed this to be a problem in SQL Server 7.0. This problem has been corrected in U.S. Service Pack 2 for Microsoft SQL Server 7.0. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

254561 INF: How to Obtain Service Pack 2 for Microsoft SQL Server 7.0 and Microsoft Data Engine (MSDE) 1.0

For more information, contact your primary support provider.


As defined by the SQL 7.0 Books Online (BOL) the bcp_colfmt function allows a value of 0 for the idxServerCol parameter. SQL BOL states:

If this value is 0, bulk copy ignores the column in the data file.

The Bcp.exe utility that ships with SQL 7.0 uses the bcp_colfmt function when a user specifies that a column is to be skipped through a "format file". A user can set the server column number field in the format file (the sixth field) to 0 to specify that a column is to be skipped from the input data file. For more information about Bcp.exe, see SQL 7.0 Books Online.

Keywords: kbbug kbfix kbqfe kbhotfixserver KB248454