rdb-demo/filtering/exists.js

ORM examples for npmjs.org/package/rdb

let rdb = require('rdb'),
    resetDemo = require('../db/resetDemo');

let Order = rdb.table('_order');
let DeliveryAddress = rdb.table('_deliveryAddress');

Order.primaryColumn('oId').guid().as('id');
Order.column('oOrderNo').string().as('orderNo');

DeliveryAddress.primaryColumn('dId').guid().as('id');
DeliveryAddress.column('dOrderId').string().as('orderId');
DeliveryAddress.column('dName').string().as('name');
DeliveryAddress.column('dStreet').string().as('street');

let deliveryAddress_order_relation = DeliveryAddress.join(Order).by('dOrderId').as('order');
Order.hasOne(deliveryAddress_order_relation).as('deliveryAddress');

let db = rdb('postgres://rdb:rdb@localhost/rdbdemo');

module.exports = async function() {
    try {
        await resetDemo();
        await db.transaction(async () => {
            let filter = Order.deliveryAddress.exists();
            let orders = await Order.getMany(filter);
            console.log(await orders.toDto());
        });
    } catch (e) {
        console.log(e.stack);
    }
}();