Compare two CSV files and get the rows that changed

Created by

Michael Costa

Actor

Dataset Diff: Compare Datasets, Get New & Changed Rows

Give two versions of the same table (CSV, JSON or Excel links, or two Apify datasets) and get only the new, changed and removed rows, with the changed fields and their old values. Here: US Treasury exchange rates, mid-year vs year-end.

Try for free

Dataset Diff: Compare Datasets, Get New & Changed Rowshumble-echidna/dataset-diff

Change

Country

Currency

Units per USD now

+2 fields

Input

Or: new data file URL (CSV, JSON, JSONL or Excel):https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v1/accounting/od/rates_of_exchange?format=csv&filter=record_date:eq:2025-12-31&page[size]=300

Or: compare with file URL:https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v1/accounting/od/rates_of_exchange?format=csv&filter=record_date:eq:2025-06-30&page[size]=300

Key fields (what identifies a row):country_currency_desc

Fields to compare:exchange_rate

Output fields

Change

Country

Currency

Units per USD now

Before

Rate date

How it works

Sign up on Apify or log in

The Dataset Diff: Compare Datasets, Get New & Changed Rows Actor is ready to run with the inputs already set for "Compare two CSV files and get the rows that changed". Sign up or log in and you'll land in Apify Console with a copy of this exact task.

Start the "Compare two CSV files and get the rows that changed" task

The Dataset Diff: Compare Datasets, Get New & Changed Rows Actor will start running based on the input automatically. You can also change all the input fields, like or: new data file url (csv, json, jsonl or excel), or: compare with file url, and more, to match your specific use case.

Receive the "Compare two CSV files and get the rows that changed" output

Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as change, country, currency, and more.

Integrate into your workflow

The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also run the "Compare two CSV files and get the rows that changed" task via API.