How to define unique index on multiple columns in sequelize

Question

How do I define a unique index on a combination of columns in sequelize. For example I want to add a unique index on user_id, count and name.

var Tag = sequ         


        

Answer 1

I prefer sequelize sync method with composite unique, If not passing indexes name u will get a error as below on adding many indexes in index array.

error: SequelizeDatabaseError: Identifier name 'LONG_NAME' is too long

module.exports = function (sequelize: any, DataTypes: any) {
return sequelize.define('muln_user_goals_transaction', {
    id: {
        type: DataTypes.INTEGER(11),
        allowNull: false,
        autoIncrement: true,
        primaryKey: true,
    },
    name: {
        type: DataTypes.STRING(),
        allowNull: false,
    },
    email: {
        type: DataTypes.STRING(),
        allowNull: false,
    },
    phone: {
        type: DataTypes.STRING(),
        allowNull: false,
    },
    amount: {
        type: DataTypes.INTEGER(8),
        allowNull: false
    },
    deleted: {
        type: DataTypes.BOOLEAN,
        defaultValue: false,
    },
}, {
    tableName: 'muln_user_goals_transaction',
    timestamps: false,
    indexes: [
        {
            name: 'unique_index',
            unique: true,
            fields: ['name', 'email', 'phone', 'amount', 'deleted']
        }
    ],
    defaultScope: {
        where: {
            deleted: false
        }
    }
});
};