define external counter function SQLFreeHandle
     (  read-only counter HandleType,
        value SQL_handle_type Handle )

Frees resources associated with a specified environment, connection, statement, or descriptor handle.

Input arguments:

1. HandleType. The type of handle to be freed. The following values are allowed:
   • SQL_HANDLE_ENV
   • SQL_HANDLE_DBC
   • SQL_HANDLE_STMT
   • SQL_HANDLE_DESC
2. Handle. The handle to be freed.