SQLBuilder\Universal\Query\AlterTableQuery::dropPrimaryKey PHP Метод

    public function dropPrimaryKey()
    {
        $this->specs[] = $spec = new AlterTableDropPrimaryKey();
        return $spec;
    }

 public function testDropPrimaryKey()
 {
     $q = new AlterTableQuery('products');
     $q->dropPrimaryKey();
     $this->assertDriverQuery(new MySQLDriver(), $q);
     $this->assertSqlStrings($q, [[new MySQLDriver(), 'ALTER TABLE `products` DROP PRIMARY KEY']]);
 }