I will write, fix and optimise your sql queries

Struggling with a broken SQL query, slow performance or incorrect results?

I will write, debug and optimise SQL queries that are accurate, efficient and tailored to your database.

I can help with:

• Writing SQL queries from your requirements
• Fixing syntax and logic errors
• Debugging incorrect or missing results
• Optimising slow-performing queries
• Creating joins, CTEs, subqueries and aggregations
• Using window functions and conditional logic
• Removing duplicates and identifying data-quality issues
• Building reports and reusable queries
• Reviewing existing SQL and improving readability
• Supporting MySQL, PostgreSQL, SQL Server and Redshift

What you will receive

• Clean and well-structured SQL
• Tested logic based on the information provided
• Clear comments where useful
• An explanation of the solution
• Professional and confidential handling of your data

Please message me before ordering with your database platform, table structure, current query and expected output so I can confirm the correct package.