About csv compare
Compare two CSV files row by row to see which rows were added, removed or changed.
Tips
- Use the same column order in both files.
- Pick a unique key column, such as an ID, so rows can be matched even if they move.
- Sort the data first if no key is available.
A worked example
Two exports of an order list differ in one price and one new row. Choosing the order ID as the key column lets the tool match rows even if they are in a different order, and it shows the changed price and the added row clearly.
Good practice
Compare files with the same columns and encoding. Trim spaces and agree on the date format first, so that harmless differences do not hide the real ones.
