Sequelize select * where attribute is NOT x

Updated method, for modern Sequelize:

model.findAll({
  where: {
    someAttribute: {
      [sequelize.Op.not]: 'some value'
    }
  }
});

Try this

model.findAll({where: {attribute: { $not: 'x'}}})

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Sequelize actually provides many operators for you to get your filter data.

You can refer to the link here