97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

單項選擇題

要實現(xiàn)從表users中查詢所有年齡大于50歲的人的信息,將查詢結(jié)果按age字段降序排序,則正確的語句是()

A.Select * from users where age>50 order by age desc
B.Select * from users where age>50 order by age asc
C.Select * from users
D.Select * from users order by age desc

微信掃碼免費搜題