How to retrieve rows using Sequelize that have at least one many-to-many item?

edit

To retrieve rows using Sequelize that have at least one many-to-many item, use the include property in your query. The include property allows you to specify related models to include in your result set.

Assuming you have a many-to-many association between two models ModelA and ModelB through a junction table ModelA_ModelB, you can use the following code to retrieve all ModelA instances that have at least one associated ModelB instance:

ModelA.findAll({
  include: [
    {
      model: ModelB,
      through: { model: ModelA_ModelB }
    }
  ]
})

This will generate a SQL query that joins the three tables and returns only the ModelA instances that have at least one associated ModelB instance. The through property is used to specify the junction table for the many-to-many association.