"exclude" instead of "include" / find where not exists

The following:

    User.findAndCountAll({
      include: [
         { model: Profile, required: true}
      ]
    });

Will return users that have a profile.

How do I return users that have no profile? Is there an exclude?

Also, can I perform additional where statements on the relation? E.g. I want to return all users that have no profile with an avatar. Something like this?

    User.findAndCountAll({
      include: [
         { model: Profile, required: true, where: {avatar: null}}
      ]
    });

[atomdmac]

I believe that this will fail with the following error if you include a “limit” clause.

Unhandled rejection SequelizeBaseError: missing FROM-clause entry for table "profiles"

[janmeier]

This can be achieved by adding userId IS NULL to the outer where clause. For it to be fully supported in sequelize you’ll need to wait for https://github.com/sequelize/sequelize/issues/3095, but in the meantime you can do

User.findAll({
    where: sequelize.literal('profiles.userId IS null'),
    include: [
    { model: Profile}
    ]
  })