typedef struct an_extfn_result_set_column_data {
    a_sql_uint32                        column_index;
    void *                              column_data;
    a_sql_uint32                        data_length;
    short                               append;
} an_extfn_result_set_column_data;

int DeptNumber = 400;
char * DeptName = "Marketing";

col_data[0].column_index = 1;
col_data[0].column_data  = &DeptNumber;
col_data[0].data_length  = sizeof( DeptNumber );
col_data[0].append  = 0;

col_data[1].column_index = 2;
col_data[1].column_data  = DeptName;
col_data[1].data_length  = strlen(DeptName);
col_data[1].append  = 0;

extapi->set_value(  arg_handle,
                EXTFN_RESULT_SET_ARG_NUM,
                (an_extfn_value *)&rs_info,
                EXTFN_RESULT_SET_NEW_ROW_FLUSH );