题解 | 用where过滤空值练习
用where过滤空值练习
https://www.nowcoder.com/practice/08c9846a423540319eea4be44e339e35
select device_id, gender, age, university from user_profile where age != ' ';
用where过滤空值练习
https://www.nowcoder.com/practice/08c9846a423540319eea4be44e339e35
select device_id, gender, age, university from user_profile where age != ' ';
相关推荐