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I will clean, deduplicate and optimize sql databases
EXPERT DATA CLEANING AND INTERACTIVE DATA ANALYSIS EXCEL SQL POWER BI
I help businesses turn messy, unorganized data into clear, actionable insights. With a background in Logistics and Transport data, I specialize in transforming raw datasets into professional dashboard...
About this Gig
Is your sales or logistics team struggling with messy, duplicate, or incomplete data? I help companies turn 'dirty' raw data into high-integrity, actionable lead lists.
As a Logistics & Data Specialist, I don't just format cells; I apply advanced database logic to ensure your data is accurate, contactable, and ready for analysis.
What I Offer:
- Advanced Deduplication: Using SQL Window Functions to find duplicates that basic Excel filters miss.
- Data Hygiene: Standardizing addresses, city names, and categorical data for perfect reporting.
- Lead Validation: Pruning non-actionable leads based on your specific business rules.
- Large Dataset Handling: Efficiently processing thousands of rows using MySQL.
- Bilingual Documentation: Providing clear summaries of all changes in English or French.
My Portfolio
FAQ
What do you need from me to get started?
I need your dataset in CSV or Excel format and a brief description of your goals. Please let me know which columns are your priority (e.g., Names, Emails, or Company IDs) and if there are specific "business rules" I should follow while cleaning.
Why do you use SQL instead of just Excel?
Excel is great, but SQL allows for more advanced logic and handles large datasets without crashing. By using SQL Window Functions and Staging Tables, I can identify duplicates across multiple criteria and ensure 100% data integrity that basic filters often miss.
Can you handle confidential or sensitive business data?
Absolutely. Data privacy is my priority. I use secure local environments to process your data, and I am happy to sign an NDA if required. Once the project is delivered and approved, I permanently delete your files from my local system.
What if I have a dataset larger than 10,000 rows?
No problem! I am equipped to handle large-scale database files. Please send me a message with the approximate row count and the complexity of the cleaning required, and I will provide a custom quote tailored to your specific needs.
Can you provide the cleaning script you used?
Yes! For my Standard and Premium packages, I can provide the .sql script or a summary of the transformation steps taken. This ensures full transparency so you can see exactly how your data was optimized.
