Search for specific integration fields

[Fares]

FYI, Another discussion where a feature request has been created

Can you query by a custom integration field id?

I'm using an integration field to link people (managed in an other system) to projects (managed in Prismic) Is the a way to get all the projects that have a relationship with one or more people, similar to how you would do it if it was a content relation? If not, are there any plans?