I will fix sql postgresql queries and database problems

Are you facing slow queries, incorrect results, duplicate records, join issues, filtering problems, or database errors in PostgreSQL or SQL?

I can help investigate the issue, identify the root cause, and provide a clean and reliable solution.

I can assist with:

• PostgreSQL and SQL query troubleshooting
• SELECT, INSERT, UPDATE and DELETE queries
• JOIN, GROUP BY, filtering and aggregation problems
• Duplicate or missing data issues
• Query optimization and performance improvement
• Database schema and relationship review
• Entity Framework Core database issues
• C#/.NET and PostgreSQL integration problems
• Stored procedures, views and functions where applicable
• Data validation and consistency problems
• Debugging database-related application errors

My approach is to understand the expected result first, then analyze the query, database structure, relationships and data flow before making changes.

The goal is not only to fix the immediate problem, but to provide a solution that is clear, maintainable and reliable.