Sequelize grouping by date, disregarding hours/minutes/seconds

For Sequelize and MYSQL

This what worked for Me:

Model.findAll({
      attributes: [
        /* add other attributes you may need from your table */
        [sequelize.fn('DATE', sequelize.col('createdAt')), 'Date']
      ],
      group: [sequelize.fn('DATE', sequelize.col('createdAt')), 'Date']
    })

As you said, it's done with sequelize.fn(...) and there is no other way. Try:

Task.findAll({
  group: [sequelize.fn('date_trunc', 'day', sequelize.col('createdAt'))]
})

I think that might do the job. If not, we'll see how to do it ;)

Notice that PostgreSQL allows you to truncate to specific intervals. For more information visit: http://www.postgresql.org/docs/9.1/static/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC

Also, to understand how group (and order) works see the documentation of Sequelize: https://github.com/sequelize/sequelize/blob/172272c8be9a847b2d64f0158826738703befddf/docs/docs/models-usage.md#manipulating-the-dataset-with-limit-offset-order-and-group

The selected answer didn't work here.

This is what is working for me.

Task.findAll({
    attributes: [
        [Sequelize.literal(`DATE("createdAt")`), 'date'],
        [Sequelize.literal(`COUNT(*)`), 'count']
    ],
    group: ['date'],
})