Doctrine recommends to use constants in the documentation, is there an equivalent for ULID?

<?php

use Doctrine\DBAL\Types\Types;

// prevents attempt to load metadata for date time class, improving performance
$qb->setParameter('date', new \DateTimeImmutable(), Types::DATE_IMMUTABLE)

I can't see the type in DBAL. There's guid but not uuid or ulid. See https://github.com/doctrine/dbal/blob/2.12.x/lib/Doctrine/DBAL/Types/Types.php

Does ulid require another dependency that Doctrine ?

It looks like GUID and UUID could be used because they are synonyms:

/**
 * Represents a GUID/UUID datatype (both are actually synonyms) in the database.
 */
class GuidType extends StringType
{

Source: https://github.com/doctrine/dbal/blob/9e37d1bdc1ee589e9baab2bb16aebf6e16a18a92/lib/Doctrine/DBAL/Types/GuidType.php#L8

But I dont know for ULID and I don't want to block the merging of this PR, feel free to keep the current code.

Yes, it's sad that we don't have an ULID type ... so let's use strings for now. Thanks!