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Merge Excel workbooks without hiding conflicting records
Need to combine exports from inventory, orders or spreadsheets? Here is a reproducible, synthetic demonstration of merging three files by a chosen key (such as order ID), while separating identical duplicates from values that require human review.
What our sample actually proves
| Check | Demonstration result |
|---|---|
| Source files / input rows | 3 files / 10 rows |
| Distinct IDs retained | 8 rows |
| Repeated IDs to examine | 2 occurrences: one exact duplicate, one conflict |
| Conflict on ID A1004 | Different amounts (375 versus 425); not silently overwritten |
| First-seen-value sum | 2,275 fictional units (not revenue) |
This is not a past customer job, an independently audited delivery, an order verification or proof of earnings.
Download the 3 synthetic CSV sources, master preview and duplicate review (ZIP)
Potential scope of a paid, one-time engagement
- Combine selected worksheets or CSV exports into a traceable master table with source-file and source-row references.
- Deliver separate summaries and duplicate / exception lists to review.
- Flag conflicting keys rather than choosing data silently; agree in advance on matching rules and acceptance tests.
An earlier local XLSX prototype was tested only for the first sheet, consistent column order, and up to 5,000 rows per file under its test conditions. The public ZIP is a CSV demonstration, not an XLSX processing program. Formula, chart, macro and formatting preservation are not promised; unusual workbooks require prior assessment.
Request a scoped quote without uploading confidential files
Describe approximate row count, file count, key columns, desired outputs, deadline, and whether AI-assisted scripts are acceptable. Do not paste personal records, passwords or payment details. We review each request before agreeing scope, price, privacy terms and any payment method. The request alone does not place an order.
Request a one-time Excel/CSV merge quote →After submission, save the private reference and retrieval code: the support portal currently does not send automatic email replies.
Original sample created with fictional values; no paid-client endorsement. Published 9 November 2026. Privacy policy · Korean version