Sql Sequelize-在不同条件下对同一关联进行两次计数

Sql Sequelize-在不同条件下对同一关联进行两次计数,sql,count,associations,sequelize.js,Sql,Count,Associations,Sequelize.js,我试图根据不同的参数获取关联表中的两个记录计数: // Models var Customer = sequelize.define('Customer', { name: DataTypes.STRING, }); var Invoice = sequelize.define('Invoice', { invoiceRef: DataTypes.STRING, status: { type: DataTypes.ENUM, values:

我试图根据不同的参数获取关联表中的两个记录计数:

// Models
var Customer = sequelize.define('Customer', {
    name: DataTypes.STRING,
});
var Invoice = sequelize.define('Invoice', {
    invoiceRef: DataTypes.STRING,
    status: {
        type: DataTypes.ENUM,
        values: ['UNPAID', 'PAID'],
        defaultValue: 'UNPAID'
    },
    isArchived: {
        type: DataTypes.BOOLEAN,
        defaultValue: false
    },
});
Invoice.associate = function(models) {
    Invoice.belongsTo(models.Customer);
}
Customer.associate = function (models) {
    Customer.hasMany(models.Invoice);
}


// Query
Customer.findAll({
    attributes: {
        include: [
            [models.Sequelize.fn("COUNT", models.Sequelize.fn("DISTINCT", models.Sequelize.col("Invoices.id"))), "totalInvoices"],
            [models.Sequelize.fn("COUNT", models.Sequelize.fn("DISTINCT", models.Sequelize.col("UnpaidInvoices.id"))), "unpaidInvoices"]
        ]
    },
    include: [
        {
            model: models.Invoice,
            where: { isArchived: false },
            attributes: [],
            required: false
        },
        {
            model: models.Invoice,
            where: { isArchived: false, status: 'UNPAID' },
            attributes: [],
            required: false
        },
    ],
    group: ['Customer.id']
})
问题在于,当多次包含相同的关联表时,Sequelize会在SQL查询中为表的两个实例指定相同的名称:

Customer
id
=
Invoices
Invoices
客户id
Invoices
已存档
=0
客户
id
=
发票
客户id
发票
被归档
<0和
发票
状态
=“未付款”

有没有办法为查询中的联接表指定不同的名称?例如:

Customer
id
=
Invoices
Invoices
客户id
Invoices
已存档
=0
客户
id
=
发票
客户id
发票
已存档
发票
<0和
发票
状态
未付款


我通常只连接一次,然后使用带有
SUM
CASE
语句,而不是使用
COUNT
——所有行都连接在一起,这就是为什么两个行都相同的原因

attributes: {
  include: [
    // count paid using case/sum via `status` != 'UNPAID'
    [ sequelize.fn('sum', sequelize.literal("CASE WHEN (`Invoices`.`status` != 'UNPAID' THEN 1 ELSE 0 END")), 'paid_count' ],
    // count unpaid using case/sum via `status` = 'UNPAID'
    [ sequelize.fn('sum', sequelize.literal("CASE WHEN (`Invoices`.`status` = 'UNPAID' THEN 1 ELSE 0 END")), 'unpaid_count' ],
  ],
  // ...
},