This is the internal directory system of RiRiLa Company, a common internal system in enterprises, typically backed by a database. You can input an employee ID to query related information. Use this system to practice SQL Injection techniques.
You can observe through real-time previews and the actual syntax executed by the server, gradually piecing together the correct query syntax.
Your goal is to obtain the query result of SELECT flag FROM flag, where the flag content is the answer to this challenge.
The injectable field in this challenge is numeric, and the technique differs slightly from that used for string-type fields.