Nodejs sequelize bulk upsert

From the official sequelizejs reference.

It can be done using bulkCreate with the updateOnDuplicate option.

Like this for example :

Employee.bulkCreate(dataArray, 
    {
        fields:["id", "name", "address"] ,
        updateOnDuplicate: ["name"] 
    } )

updateOnDuplicate is an array of fields that will be updated when the primary key (or may be unique key) match the row. Make sure you have at least one unique field (let say id) in your model and in the dataArray both for upsert.