Can I deduplicate based on specific columns?

Yes, you can specify one or more column names to target for deduplication, such as email or phone.

What is the 'most complete record' strategy?

This strategy evaluates duplicate rows and retains the row containing the fewest empty or null values.

How does fuzzy matching work?

Fuzzy matching identifies duplicates with minor spelling differences or typos based on a similarity threshold you set from 0 to 100.

Does the tool modify my original file?

No, the tool processes your data locally or securely in-memory and outputs a new, cleaned CSV file for download.

Can I preserve the original row order?

Yes, checking the 'Preserve Original Order' option ensures the output rows remain in their original sequence.

CSV Deduplicate Rows

Examples

1. Clean a CRM export before outreach

Sales Operations Specialist

Background

A sales operations specialist exported a lead list from a CRM, but it contains duplicate contacts with identical email addresses.

Problem

Remove duplicate contacts while keeping the first occurrence of each email address to avoid sending duplicate emails.

How to use

Paste the CSV text into the input area, enter 'email' in the Deduplication Columns field, set the strategy to 'Keep First Record', and download the cleaned file.

{
  "deduplicationColumns": "email",
  "strategy": "first",
  "trimValues": true,
  "preserveOriginalOrder": true
}

Outcome

A cleaned CSV file with unique email addresses, ready for the email outreach campaign.

2. Merge survey responses with fuzzy name matching

Data Analyst

Background

An analyst has a survey response sheet where some participants submitted multiple entries with slight typos in their names.

Problem

Deduplicate the responses based on name and email, keeping the record that has the most complete information.

How to use

Upload the survey CSV file, set the deduplication columns to 'name, email', enable fuzzy matching with an 80% threshold, and select the 'Keep Most Complete Record' strategy.

{
  "deduplicationColumns": "name, email",
  "strategy": "most_complete",
  "fuzzyMatching": true,
  "fuzzyThreshold": 80
}

CSV Deduplicate Rows | Elysia Tools

CSV Deduplicate Rows

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Examples

1. Clean a CRM export before outreach

2. Merge survey responses with fuzzy name matching

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