Templates & Samples
Copyable sample data and field standards for fast validation
Every guide includes verifiable sample data you can copy and test.
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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.
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.
CSV Batch Deduplication: Big Data & Cross-Platform
Learn how to batch process multiple CSV files, handle encoding, delimiters and other common issues, supporting deduplication of tens of millions of records. Includes Python script examples.
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.
Research/Survey Data Batch Deduplication: Email/Organization/Time Window Composite Key Practice
Professional guide for academic research and survey data cleaning: handle duplicate responses, cross-batch merging, organization name standardization, time window deduplication. Support privacy compliance, retention rule configuration, audit tracking, suitable for academic research, market research, user feedback and other scenarios.