FreeTDS Development Group

[Bruce Seely <bseely AT stsci.edu>]

How can I get the error reason when an error code is returned by a call to 
SQLColAttribute?

SQLColAttribute is called with these arguments:
      SQLHSTMT        StatementHandle, odbc_hstmt
      SQLUSMALLINT    ColumnNumber, 1
      SQLUSMALLINT    FieldIdentifier, 1011
      SQLPOINTER      CharacterAttributePtr, STACK-ALLOCATED 
(SHORT-SIMPLE-ARRAY FOREIGN (65))
      SQLSMALLINT     BufferLength, 255 (also tried 65)
      SQLSMALLINT *   StringLengthPtr, STACK-ALLOCATED (SHORT-SIMPLE-ARRAY 
FOREIGN (2))
      SQLLEN *        NumericAttributePtr); 0

The returned value is -1.

When pending messages are retrieved using SQLGetDiagRec, no messages are 
found.
What can I do to determine why the call is failing?

Thank you,
Bruce