I will write, fix, and optimize sql queries

I'll write, debug, or optimize SQL for your database from a single query to a full reporting layer.

With hands-on experience across SQL Server, Oracle, MySQL, and PostgreSQL, I handle everything from everyday SELECT/JOIN logic to complex stored procedures, window functions, and performance tuning on large tables. My background is in production healthcare data systems, where queries have to be both correct and fast against real-world, messy data so I pay close attention to edge cases most freelancers miss.

What I can help with:

• Writing new queries, views, and stored procedures from your requirements
• Fixing queries that return wrong or incomplete results
• Speeding up slow queries (indexing, query plan analysis, rewrites)
• Joining and aggregating data across multiple tables/sources
• Converting queries between SQL Server, MySQL, and PostgreSQL dialects

Send me your schema (or a sample) and what you're trying to get out of it I'll take it from there.