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$
USD
I will write and optimize sql queries for your database
Data Engineer and Python Automation Specialist
Data engineer with 2+ years of industry experience building and fixing data pipelines, SQL databases, and Python automation. I clean messy CSV/Excel data, write Python scripts that automate repetitive...
About this Gig
Slow or broken queries cost you time and money. I will write, debug, and optimize SQL queries for your database so they run fast and return exactly what you need.
I am a data engineer who works in SQL every day across MySQL, PostgreSQL, MS SQL, and SQLite.
What you get:
- Clean, commented SQL you can reuse
- Query optimization: indexes, execution plans, rewrites (Standard and Premium)
- A plain-English explanation of what every query does
- Debugging for queries that error out or return wrong results
How it works:
1. Share your database schema (or a sample), your DBMS, and what the query should do.
2. I confirm scope before starting.
3. You get the queries plus notes, and I revise if needed.
Message me before ordering for large schemas or urgent work.
Database type:
Non-relational database
•
Relational database
Platform:
MS SQL
•
MySQL
•
PostgreSQL
•
SQLite
Expertise:
SQL
•
DQL
•
Performance
•
Query optimization
FAQ
Do you need access to my database?
No. You share the schema and sample data (sensitive values removed), and I deliver queries you run yourself. I never ask for live credentials.
