Why doesn’t the SHOW DATABASES; command in MySQL display all the databases?

The SHOW DATABASES; command in MySQL might not display all databases due to insufficient privileges. By default, this command only lists databases the current user has access to. If a user lacks the SHOW DATABASES privilege or specific permissions for certain databases, those databases will be hidden. Additionally, system settings, such as the skip-show-database option in the MySQL configuration file, can restrict database visibility. To view all databases, ensure the user has appropriate privileges, including the SHOW DATABASES or ALL PRIVILEGES grants. Adjusting the configuration or using an administrative account like root can also resolve this issue.