题解 | #顾客登录名#
顾客登录名
https://www.nowcoder.com/practice/7cbf5e3082954c21a80fc750ce97350f
select cust_id,cust_name,concat(upper(left(cust_contact,2)), upper(left(cust_city,3))) as user_login from Customers
concat(upper(left(,数字)
顾客登录名
https://www.nowcoder.com/practice/7cbf5e3082954c21a80fc750ce97350f
select cust_id,cust_name,concat(upper(left(cust_contact,2)), upper(left(cust_city,3))) as user_login from Customers
concat(upper(left(,数字)
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