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$
USD
I will write, fix and optimize sql queries for your database tasks
Data Engineer
Hi, I’m a Data Engineer with hands-on experience in SQL, Excel, Python, PySpark, Databricks, ADF and dashboard reporting.
I help clients with:
1. SQL query writing, debugging, and optimization
...
About this Gig
Hi, I am a working Data Engineer and I can help you write, fix, and optimize SQL queries quickly and clearly.
What I can help with:
- Write SQL queries from your requirement
- Fix errors in joins, filters, GROUP BY, subqueries, and CTEs
- Optimize slow queries with basic performance improvements
- Build report queries for daily, weekly, and monthly KPIs
- Explain query logic with comments
Databases supported:
- MySQL
- PostgreSQL
- SQL Server basic to intermediate
What you will get:
- Clean and working SQL query or query set
- Output validation based on your expected result
- Clear communication and on time delivery
Please message me before placing an order with:
- Table schema
- Sample data if possible
- Expected output format
I will confirm scope and delivery time quickly.
FAQ
What do you need from me to start?
Please share table schema, sample data or mock data, expected output, and database type MySQL PostgreSQL or SQL Server.
Which SQL databases do you support
I mainly support MSSQL and MySQL. I also support basic to intermediate SQL Server tasks.
Can you fix broken SQL queries
Yes. I can fix syntax errors, join issues, filter conditions, grouping problems, subqueries, and CTE logic.
Can you optimize slow SQL queries
Yes. I can improve query structure and suggest basic indexing and performance improvements.
Do you explain the SQL logic
Yes. I provide clean SQL with comments and a short explanation of the logic.
Do you provide urgent delivery
Yes. For small tasks I can provide faster delivery. Please message me before placing the order.
Can you work on large projects
Yes. Please message first with details so I can review scope, timeline, and pricing.
Will my data stay private
Yes. Your data and query details are kept confidential and used only for your project work.
