SQLColumnPrivileges
SQLColumnPrivileges returns SQL_SUCCESS whether or not values exist for the CatalogName, SchemaName, TableName, or ColumnName parameters. SQLFetch returns SQL_NO_DATA when invalid values are used in these parameters.
SQLColumnPrivileges can be executed on a static server cursor. An attempt to execute SQLColumnPrivileges on an updatable (dynamic or keyset) cursor will return SQL_SUCCESS_WITH_INFO indicating that the cursor type has been changed.
The SQL Native Client ODBC driver supports reporting information for tables on linked servers by accepting a two-part name for the CatalogName parameter: Linked_Server_Name.Catalog_Name.
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Conceptos
ODBC API Implementation Details