I will write and optimize sql queries and fix db2 database issues
Desenvolvedor Java e Angular, sistemas legados Delphi e DB2
About this Gig
Need a SQL query written, a slow query fixed, or help with a DB2 database? I can help.
I am a developer with over 25 years in IT, working every day with DB2 and relational databases behind Java and REST applications. I have also worked with Oracle, SQL Server, PostgreSQL, MySQL, Sybase, Firebird and InterBase.
What I can do for you:
- Write SELECT, INSERT, UPDATE and DELETE queries, joins and reports
- Find why a query is wrong or slow and fix or optimize it
- Review a small stored procedure or table structure
- Explain in plain words what each query does
How I work: I use AI tools to speed up the analysis and the writing, but I always review and test every query myself before delivering. I do not promise what I cannot do. Before you order, send me a message describing the problem and the database you use, and I will tell you honestly if I can solve it, how long it will take and which package fits.
Best for small, well-defined tasks. I do not do large data migrations or full database projects with this gig.
Database type:
Centralized database
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Relational database
Platform:
Db2
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MySQL
•
Oracle
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PostgreSQL
Expertise:
Data structure
•
SQL
•
Performance
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Query optimization
My Portfolio
FAQ
Do you use AI to write the queries?
Yes, as a support tool. I always review and test every query myself before delivering, and I explain what it does. If your data is confidential, tell me before ordering. You can also send only the table structure and fake sample data.

