QMYSQL driver not loaded

[robotics]

I want to make a connection with mysql workbench. I have created table in mysql workbench but I am getting this problem when simply adding database connection

QSqlDatabase db=QSqlDatabase::addDatabase("QMYSQL");

QSqlDatabase db=QSqlDatabase::addDatabase("QMYSQL");

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Error:::QSqlDatabase: QMYSQL driver not loaded
please help me regarding this.