You will get professional SQL queries and accurate data extraction
Project details
You will receive accurate and reliable SQL solutions designed to help you get the information you need from your data.
Many businesses collect large amounts of data but struggle to answer important questions such as:
• Which products generate the most revenue?
• Which customers are most valuable?
• How is the business performing over time?
• What information should be included in a report or dashboard?
As a Data Analyst with experience in SQL, Excel, Python, and business analytics, I help transform raw data into clear and actionable information.
My services include:
✓ Custom SQL queries
✓ Data extraction and reporting
✓ Query debugging and optimization
✓ Data validation and quality checks
✓ Analysis-ready datasets
✓ Support for dashboards and business reporting
Whether you need a simple query, a business report, or help understanding your data, my goal is to provide accurate results, clear communication, and solutions that help you make better decisions.
Many businesses collect large amounts of data but struggle to answer important questions such as:
• Which products generate the most revenue?
• Which customers are most valuable?
• How is the business performing over time?
• What information should be included in a report or dashboard?
As a Data Analyst with experience in SQL, Excel, Python, and business analytics, I help transform raw data into clear and actionable information.
My services include:
✓ Custom SQL queries
✓ Data extraction and reporting
✓ Query debugging and optimization
✓ Data validation and quality checks
✓ Analysis-ready datasets
✓ Support for dashboards and business reporting
Whether you need a simple query, a business report, or help understanding your data, my goal is to provide accurate results, clear communication, and solutions that help you make better decisions.
Database Type
MySQL, MS SQL, SQLite, PostgreSQLWhat's included
| Service Tiers |
Starter
$25
|
Standard
$50
|
Advanced
$100
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Number of Queries | 1 | 3 | 3 |
Query Debugging | - | ||
Query Optimization | - | ||
Query Scheduling | - | - | |
Query Analysis | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$10 - $25
Additional Revision
+$10
Additional Query
(+ 1 Day)
+$15
Query Debugging
(+ 1 Day)
+$15
Query Optimization
(+ 1 Day)
+$20
Query Scheduling
(+ 2 Days)
+$25
Database Review & Recommendations
(+ 1 Day)
+$25Frequently asked questions
About Claudenilson
E-commerce Data Strategist | Fix Retention Leaks & Maximize ROAS
Recife, Brazil - 11:47 pm local time
Most founders rely heavily on aggressive discounts and expensive ad campaigns, destroying their net margins without knowing why their revenue has flatlined. I engineer the data pipelines and automated dashboards that expose exactly where your business is leaking money.
🏆 DEEP-DIVE CASE STUDIES IN MY PORTFOLIO:
The Retention Bottleneck Study: I led a growth diagnostic for a retail startup to analyze why $772M in revenue had flatlined. Using SQL and Cohort Analysis across 2.2M+ records, I uncovered that 61.7% of acquired users were one-time buyers, and proved that securing a second purchase increased customer Lifetime Value (LTV) by 124% [🔗].
The 42k+ Product Pricing Elasticity Study: I audited a global consumer electronics catalog with 42,000+ active items using Python (Pandas/Seaborn). I mapped the exact threshold where discounts drive conversion vs. where they erode profit, proving that moderate discounts (5% to 8%) coupled with specific trust signals optimized revenue potential [🔗].
🎯 WHAT I WILL DELIVER FOR YOUR E-COMMERCE:
- Shopify & GA4 Audit: Cleaning your data pipeline and fixing broken tracking events so your dashboard numbers actually match your bank account.
- Automated Power BI / Looker Studio Dashboards: Building real-time executive views for Cohort Retention, True ROAS, and Product Margin Leaks.
- Data-Driven Action Plans: Translating complex database tables into clear commercial strategies.
I have a background in business intelligence and extensive experience working in international, fast-paced environments using English daily.
If you want a professional who doesn’t just build charts, but tells you exactly where your next $10,000 in profit is hidden, let’s look under the hood of your data.Available for Fixed-Price growth audits and long-term data strategy consulting. Let's chat!
Steps for completing your project
After purchasing the project, send requirements so Claudenilson can start the project.
Delivery time starts when Claudenilson receives requirements from you.
Claudenilson works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Review
Review the project requirements, data structure, and expected outcome.
Query Development
Create and test SQL queries based on the business requirements.