FTTH/app/DoctrineMigrations/Version20171107185545.php

<?php

namespace Application\Migrations;

use Doctrine\DBAL\Migrations\AbstractMigration;
use Doctrine\DBAL\Schema\Schema;

class Version20171107185545 extends AbstractMigration
{

    /**
     * @param Schema $schema
     */
    public function up(Schema $schema)
    {
        $this->addsql(
            "UPDATE nap AS n 
            JOIN olt AS o ON o.name = JSON_EXTRACT(n.extra_data, '$.olt')
            SET n.link = JSON_EXTRACT(n.extra_data, '$.link'), 
                n.slot = JSON_EXTRACT(n.extra_data, '$.slot'), 
                n.olt_id = o.id
            WHERE n.link = 0 AND n.slot = 0;"
        );
    }

    /**
     * @param Schema $schema
     */
    public function down(Schema $schema)
    {
        // this down() migration is auto-generated, please modify it to your needs
    }

}