SQLColumns incorrectly returns the values for the NULLABLE and IS_NULLABLE fields for auto_increments

I have created a table with a primary key that is auto incrementing.
I would then call the ODBC function SQLColumns for this new table.

• For the auto incrementing column, the NULLABLE is set to 1, and the IS_NULLABLE is set to 0.

For comparison, I used MS SQL Server's identity column, which I think is the equivalent of the auto increment. sp_columns returns 0 for NULLABLE and NO for IS_NULLABLE.