We are about to learn another method which is double-quote injection in the MySQL database. The databases are not vulnerable to those methods and you cannot connect with the database. In short, the error based SQL injection will use a single quote to break the query to join the query and integer based injection will be joining the query without the single quote. You can learn best Web Hacking and Bug Bounty Course from Leading Cybersecurity platform from leading cybersecurity platform. You can use this website to practice skills for SQL injection onLINE LAB:”]
Source: https://gbhackers.com/perform-manual-sql-injection-2/