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I will write, fix, and clean up sql, mongodb, and neo4j queries
Data Analysis Student
I am a final-year Data Analysis student at the University of Messina. I build systems that integrate diverse data types, including a traffic-management project using relational, document, and graph da...
About this Gig
I write, fix, and clean up database queries for MySQL, MariaDB, MongoDB, and Neo4j (Cypher).
Whether you need a new query written from scratch or an existing one debugged because it returns errors or unexpected results, I'll deliver a working solution tested against your schema, along with a clear explanation of what it does and why.
What's included:
- Queries written or fixed for your specific database
- Testing against your schema and sample data
- A plain-language explanation of each query
- Premium: a written review of your schema with suggestions for improvement
About me:
I'm a final-year Data Analysis student with hands-on experience building systems that combine relational, document, and graph databases. I communicate clearly and don't deliver anything I haven't tested.
To get started, please send:
1. Your database type and schema
2. A small sample of your data, if possible
3. The result you expect
If you're unsure which package fits, send me a message first and I'll recommend one.
Platform:
MariaDB
•
MongoDB
•
MySQL
•
Neo4J
Expertise:
SQL
•
NoSQL
•
ER diagrams
•
Normalization
FAQ
Do you need access to my database?
No. Your schema and a small sample of data are enough. You keep full control of your database, and I never need login details.
What if the query doesn't work in my environment?
Tell me what happened and I'll fix it — that's what revisions are for. Sending your database version and any error message helps me solve it quickly.
Can you work with data I can't share?
Yes. You can replace real values with made-up ones, as long as the structure stays the same. I only need to see how your data is organized, not the actual content.
Which package should I choose?
Minor Problem is for a single query. Growing Problem covers up to 5 related queries. It's All a Mess is best when you need several queries and want advice on how your database is structured. If you're unsure, message me first.
Will you judge my table names?
Only a little. Mostly I'll just make your queries work — and if the names are causing problems, I'll suggest better ones.
