Guides

Merge CSV files with matching headers

A vertical merge adds the data rows of later files under the first table. It does not join customers by ID, match records by date or combine unrelated columns. Ragve requires identical header text and order.

Select the columns tool and choose multiple CSV files. A Name,City file can merge with another Name,City file. A City,Name file fails validation; reorder its source columns first to prevent misaligned data.

Column numbers start at 1. Enter 2,1 to put City before Name. The selection affects all merged rows. Leave the field empty to keep the original columns. Sorting uses a selected original column number.

Check the output row count against the sum of the source data rows. Duplicates are retained by this tool; you can clean the merged output separately. All files together must stay within the 20 MB and 100,000-row limits.