Dedup & Merge Hub
A systemized guide to fuzzy dedup, merge-and-fill, and retention rules
From exact dedup to fuzzy merge, build a verifiable workflow for deliverable data.
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Featured Tutorials
Excel Fuzzy Deduplication: Standardization Strategy Checklist, Fuzzy Merge Parameters, Formula & M Code Templates
Find and correctly merge records that look different but are actually the same—covering case, whitespace, symbols, full/half-width, email aliases, phone country codes, approximate spelling, etc.
Excel Deduplication with Keep Rules: Retain First/Latest Record Guide
Comprehensive guide to Excel deduplication retention rules: keep first, keep latest, keep max value, multi-tier rules. Provides SheetCleaner, Power Query, and Excel 365 formula implementations with complete examples and best practices.
Excel Multi-Column Deduplication: Keep Unique Data by Combined Conditions
Learn how to use multi-column combinations as unique keys for deduplication, supporting keep-latest, keep-highest rules for customer, product, and order scenarios.
Excel Cross-Sheet Deduplication Tutorial: Handle Duplicate Data Across Multiple Worksheets
Learn how to deduplicate across multiple worksheets, supporting multi-column combinations and smart strategies, handling millions of records.
Merge Multiple Customer Lists and Remove Duplicates (Downloadable Template Included)
Professional guide for multi-channel customer list merging: unify field formats, intelligent deduplication, keep latest records. Suitable for form collection, offline events, social media promotion and other multi-source customer data integration with scoring and source tracking.
Why Excel's Built-in "Remove Duplicates" Isn't Enough? (3 Better Solutions)
5 major limitations of Excel's built-in deduplication feature: no cross-sheet support, no retention rules, no fuzzy matching, no duplicate details, crashes on big data. Provides three more stable solutions: SheetCleaner, Power Query, and Excel 365 formulas.