WP QueryBuilder 1.6.2 is released.

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()
	->execute();

Drop column.

DB::alter('cv_users')
	->drop('username')
	->execute();