【简答题】求每个终点的平均票价的SQL语句是A)SELECT终点,avg(票价)FROM ticket GROUP BY票价B)SELECT终点,avg(票价)FROM ticket ORDER BY票价C)SELECT终点,avg(票价)FROM ticket ORDER BY终点D)SELECT终点,avg(票价)FROM ticket GROUP BY终点
【简答题】求每个终点的平均票价的SQL语句是:A)SELECT终点,avg(票价)FROM ticket GROUP BY票价B)SELECT终点,avg(票价)FROM ticket ORDER BY票价C)SELECT终点,avg(票价)FROM ticket ORDER BY终点D)SELECT终点,avg(票价)FROM ticket GROUP BY终点