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$
USD
I will extract complex data using sql joins and subqueries
Data Analyst,Excel Automation, SQL, Power BI, Python Expert
Welcome! I am a Full-Stack Data Analyst specializing in end-to-end data pipelines & business automation. I transform messy datasets into interactive enterprise assets that drive executive decisions.
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About this Gig
Welcome to the Professional SQL Data Extraction & Database Query Service!
Are you struggling with slow database performance? Do you need to extract complex business metrics from multi-table architectures? Look no further!
I am a Database Developer and Data Analyst. I leverage the power of SQL joins, subqueries, and optimizations to transform your messy server datasets into clean, executive-ready reports.
What I Will Do For You:
- Data Extraction: Write advanced multi-table INNER/LEFT JOIN pipelines to combine customer, sales, and product records.
- Business Aggregations: Develop memory-efficient GROUP BY scripts to calculate regional trends and key performance indicators.
- Advanced Subqueries: Program nested WHERE conditions to filter data dynamically based on live server-side calculations.
- Query Optimization: Diagnose slow execution patterns and replace heavy external workflows with hyper-fast database rules.
- Debugging & Fixes: Identify structural syntax faults, fix relationship constraints, and repair broken code sequences.
Why Choose Me?
- Expert in MySQL, PostgreSQL, and MS SQL platforms. [Upwork]
- Super-fast delivery with clean, bug-free, and well-commented code.
- 100% data security.
Database type:
Centralized database
•
Relational database
Platform:
MS SQL
•
MySQL
•
PostgreSQL
Expertise:
SQL
•
DDL
•
DQL
•
Query optimization
My Portfolio
FAQ
Which database platforms do you support?
I specialize in writing highly optimized SQL scripts for MySQL, PostgreSQL,and MS SQL Server platforms.Whether your architecture is relational or centralized, I can handle your data pipelines smoothly.
Do I need to share my live database credentials with you?
No, your server security is my priority. You can simply share the database schema (table structures) and some dummy sample data in a .sql, Excel, or CSV file. I will write and test the queries locally.
Will you deliver the raw SQL script or the final extracted data?
I will deliver both! You will receive a clean, well-commented .sql script file containing the exact queries, along with the extracted data exported in Excel/CSV format for your immediate business review.
