Question

我有两个桌子

CustomerAccount和CustomerAccountService

它们通过以下方式关联：

CustomerAccount.hasMany(CustomerAccountService, {
    foreignKey: 'account_uuid'
});

CustomerAccountService.belongsTo(CustomerAccount, {
    as: 'account',
    foreignKey: 'account_uuid'
});

CustomerAccountService有两列，分别名为invoice_amount和core_amount。

我想获取所有CustomerAccount的列表，并在该列表中显示其子项CustomerAccountService记录的所有发票金额和所有核心金额的总和。

这是我正在尝试的查询：

CustomerAccount.findAll({
    attributes: [
        'uuid',
        'account_name',
        'account_number',
        'emergency_pay',
        [Sequelize.fn('SUM', Sequelize.col('CustomerAccountService.invoice_amount')), 'totalInvoiceAmount'],
        [Sequelize.fn('SUM', Sequelize.col('CustomerAccountService.core_amount')), 'totalCoreAmount']
    ],
    include: [
        {
            model: CustomerAccountService,
            attributes: []
        }
    ],
    group: ['CustomerAccount.uuid']
}).then(...);

但是它抛出一个错误提示

未处理的拒绝SequelizeDatabaseError：未知列 “字段列表”中的“ CustomerAccountService.invoice_amount”

如何从关联表中获得两列的总和？

CustomerAccountService的模型定义为：

return sequelize.define(
        'customer_accounts_services', 
        {
            uuid: {
                type: type.STRING,
                primaryKey: true,
                autoIncrement: false
            },
            account_uuid: type.STRING,
            account_number: type.STRING,
            account_type: type.STRING,
            payment_type: type.STRING,
            service_type: type.STRING,
            date: type.DATEONLY,
            description: type.TEXT,
            invoice_amount: type.DECIMAL(10,2),
            core_amount: type.DECIMAL(10,2),
            paid: type.BOOLEAN
        },
        {
            timestamps: false,
            underscored: true,
            tableName: 'customer_accounts_services'
        }
    );

Answer 1

您的模型定义将表名称设置为customer_accounts_services，但是您将CustomerAccountService的模型名称传递给Sequelize.col()，该名称不存在，因此您会收到有关缺少列。

更新查询以使用Sequelize.col()中正确的表名。

[Sequelize.fn('SUM', Sequelize.col('customer_accounts_services.invoice_amount')), 'totalInvoiceAmount'],
[Sequelize.fn('SUM', Sequelize.col('customer_accounts_services.core_amount')), 'totalCoreAmount']

从关联表中获取列总和

1 个答案: