MDAC 2.5 SDK - Visual FoxPro ODBC Driver
Support: Full
ODBC API Conformance: Level 1
Retrieves the optimal set of columns that uniquely identifies a row in the table.
The Visual FoxPro ODBC Driver returns the columns that make up the primary key on the FoxPro table. (See SQLPrimaryKeys.) If called with fColType set to SQL_ROWVER, no columns are returned. SQLSpecialColumns works only for data sources that are databases.
For more information, see SQLSpecialColumns in the ODBC Programmer's Reference.