Function PQfname

src/interfaces/libpq/fe-exec.c:3372–3381

* returns NULL if the field_num is invalid */

 * returns NULL if the field_num is invalid
 */
char *
PQfname(const PGresult *res, int field_num)
{
	if (!check_field_number(res, field_num))
		return NULL;
	if (res->attDescs)
		return res->attDescs[field_num].name;
	else
		return NULL;
}

/*
 * PQfnumber: find column number given column name