public function execute()
    {
        $this->preExecute();
        $result = $this->connection->query($this->getSql());
        $this->postExecute();

        $schemas = array();
        foreach ($result as $row) {
            $schemas[] = new Schema($row['schema_name']);
        }

        return $schemas;
    }
public function execute()
    {
        $this->preExecute();
        $result = $this->connection->query($this->getSql());
        $this->postExecute();

        $schemas = array();
        foreach ($result as $row) {
            $schemas[] = new Schema($row['schema_name']);
        }

        return $schemas;
    }
{@inheritdoc}