Cannot find how to query model where association is null in the docs

Query for null association results

How to exclude the associations inside an include?

Hello everyone, I’ve been trying for really long to query for a model where its associations are null, but cannot find it in the docs o solve it anyway with the query. As I’m paginating the results, I’m offsetting and limiting the query result, so I really need to get the models where I have no associations in the form of an array.

Example snippet:

const words = await models.Word.findAll({
  order: [['id', 'ASC']],
  limit: 20,
  offset,
  include: [
    {
      model: models.Synonym,
      attributes: ['id', 'name'],
    },
  ],
  // I've tried so many things here so I don't really know what else to try out
  where: {
    $Word.Synonyms$: null,
  }
});

Using this query (and many other variations…) I tried to bring all the words where synonyms was null instead of an array, but couldn’t get to do that and had to do it with code after the query, but it breaks the pagination.

In my case the models are related this way:

models.Word.hasMany(models.Synonym);
models.Synonym.belongsTo(models.Word);

Thank you so much in advance, hope someone had solved this problem before. Would be great to have it in the docs with an example (I’m up to writing it and opening a PR if I get the problem solved).

[luqimin]

Thank you @andres112013 , I solved it by param subQuery: false

[EduardMcfly]

Good day

Try to make your query like this

import { Op } from "sequelize";
const words = await models.Word.findAll({
  order: [["id", "ASC"]],
  limit: 20,
  offset,
  include: [
    {
      model: models.Synonym,
      attributes: ["id", "name"]
    }
  ],
  //  When you need to condition the associations, use Sequelize.where
  where: Sequelize.where(Sequelize.col(`word.synonymId`), Op.is, null)
});

I hope it works for you