Alter Statement
Add new column.
DB::alter('cv_users')
->add('name')->longText()
->execute();
Modify column data type.
DB::alter('cv_users')
->modify('name')->string()->required()
->execute();
Modify column name and data type.
DB::alter('cv_users')
->modify('name', 'username')->string(455)->required()
->modify('settings')->json()
->column('created_at')->timestamp('now')
->execute();
Drop column.
DB::alter('cv_users')
->drop('username')
->execute();