fail if sourceKey for hasMany was not found

What you are doing?

const hotelAttributeList = sequelize.define('hotelAttributeList', {
    id: {
      type: DataTypes.INTEGER(11),
      allowNull: false,
      primaryKey: true,
      autoIncrement: true,
      field: 'hotel_attribute_list_id'
    },
    eanHotelId: {
      type: DataTypes.INTEGER(11),
      allowNull: true,
      field: 'ean_hotel_id'
    }
},
{
    tableName: 'hotel_attribute_list'
})
const hotelProperties = sequelize.define('hotelProperties', {
    id: {
      type: DataTypes.INTEGER(11),
      allowNull: false,
      primaryKey: true,
      autoIncrement: true,
      field: 'hotel_properties_id'
    },
    eanHotelId: {
      type: DataTypes.STRING(10),
      allowNull: false,
      field: 'ean_hotel_id'
    }
},
{
    tableName: 'hotel_properties'
});
hotelProperties.hasMany(hotelAttributeList, {
  sourceKey: 'eanHotelId',
  foreignKey: 'eanHotelId'
});

What do you expect to happen?

I expect the column ean_hotel_id to join to ean_hotel_id between the tables

What is actually happening?

primary key hotel_properties_id is joining against ean_hotel_id.

Dialect: mysql
Sequelize version: 3.30.4

Start by reproducing the hasMany association from the issue body with the MySQL dialect, then trace how Sequelize resolves sourceKey and foreignKey for this association. Done means the generated join uses hotel_properties.ean_hotel_id and hotel_attribute_list.ean_hotel_id rather than the primary key.