using op sequelize code example

Example 1: op in sequelize

//First method
// selecting authorityId :12 or 13
model.findAll({
  where: {
    [Op.or]: [
      { authorId: 12 },
      { authorId: 13 }
    ]
  }
});

Example 2: op in sequelize

// second method
// selecting authorityId :12 or 13
model.findAll({
  where: {
    authorId: {
      [Op.or]: [12, 13]
    }
  }
});