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English
$
USD
I will write, fix, and optimize sql queries for your database
Senior Dot Net Developer, ERP, SQL and AI Integration Expert
I am a Senior Software Engineer with 11+ years of experience building
enterprise-grade applications using ASP.NET Core, C#, SQL, and modern APIs.
I specialize in:
✔ ERP & business systems
✔ Secure w...
Level 1
Has met certain performance criteria and shows strong potential in the marketplace.
About this Gig
Are you struggling with SQL queries, errors, or slow performance?
I will help you write, fix, and optimize SQL queries for accurate and fast results.
I work with SQL Server, MySQL, and PostgreSQL and can assist with both small fixes and complex queries.
What I can help you with:
Writing SQL queries from scratch
Fixing incorrect or broken queries
SELECT, JOIN, GROUP BY, HAVING, subqueries
Debugging wrong results or errors
Optimizing slow queries for better performance
Improving query readability and structure
Basic indexing and performance suggestions
Why choose this gig:
Clean and well-structured SQL
Focus on correctness and performance
Clear communication and quick response
Source queries delivered with explanation if needed
Please message me before placing an order so I can review your requirement
and suggest the best package for your task.
Platform:
MongoDB
•
MySQL
•
PostgreSQL
•
SQL Server
Expertise:
SQL
•
NoSQL
•
DQL
•
Query optimization
Other Databases Services I Offer
FAQ
What type of SQL databases do you support?
I work with SQL Server, MySQL, PostgreSQL, and similar relational databases.
Can you fix or debug existing SQL queries?
Yes. I can fix errors, incorrect results, and improve existing SQL queries.
Do you write complex SQL queries?
Yes. I handle joins, subqueries, GROUP BY, HAVING, and advanced filtering.
Do you need access to my database?
Not necessarily. Table structure, sample data, and the query are usually enough.
Should I contact you before placing an order?
Yes. Messaging first helps me understand your requirement and suggest the right package.
Can you optimize slow SQL queries?
Yes. I can rewrite queries and suggest indexing to improve performance.
