@pujansrt/data-genie/dist/examples/aggregation-example.js

High performant ETL engine written in TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const index_1 = require("../index");
async function runExample() {
    let reader = new index_1.CSVReader('input/example.csv').setFieldNamesInFirstRow(true);
    reader = new index_1.TransformingReader(reader).add(new index_1.BasicFieldTransformer('Balance', 'CreditLimit').stringToDouble());
    const groupByReader = new index_1.GroupByReader(reader, 'Rating')
        .count('AccountCount')
        .max('Balance', 'MaxBalance')
        .min('Balance', 'MinBalance')
        .avg('Balance', 'AvgBalance')
        .sum('Balance', 'SumBalance')
        .avg('CreditLimit', 'AvgCreditLimit');
    await index_1.Job.run(groupByReader, new index_1.ConsoleWriter());
    // await Job.run(groupByReader, new JsonWriter('output/aggregated-data.json'));
}
runExample().catch(console.error);