题解 | #顾客登录名#
顾客登录名
https://www.nowcoder.com/practice/7cbf5e3082954c21a80fc750ce97350f
# select c.cust_id,c.cust_name, # upper(concat(substring(c.cust_name,1,2), substring(c.cust_city,1,3))) as c.user_login # from Customers as c; select cust_id,cust_name, upper(concat(substring(cust_name,1,2),substring(cust_city,1,3))) as user_login from Customers;
注意，这里不让用库名缩写，第一个实例运行失败，当删除as s后就可运行成功，好神奇呀。
查看15道真题和解析