framework/db/Command.php
public function dropTable($table)
    {
        $sql = $this->db->getQueryBuilder()->dropTable($table);

        return $this->setSql($sql)->requireTableSchemaRefresh($table);
    }
public function dropTable($table)
    {
        $sql = $this->db->getQueryBuilder()->dropTable($table);

        return $this->setSql($sql)->requireTableSchemaRefresh($table);
    }
Creates a SQL command for dropping a DB table.
@param string $table the table to be dropped. The name will be properly quoted by the method.
@return $this the command object itself