I will write complex sql queries and optimize slow ones in mssql and postgresql

Need a complex SQL query built from scratch? Or an existing one that's running too slow?

I handle both pick what you need:

Building a query? Complex joins, reports, analytics, from a schema or a plain-English requirement. Fixing a query? Slow, timing out, or eating up server resources I'll diagnose and optimize it.

Basic SELECT statements can be written by anyone (or by AI) today. Where I add real value: turning a messy business requirement into a correct, efficient complex query, and knowing why a query is slow on your actual system and fixing the root cause bad indexing, poor execution plans, locking/blocking, outdated statistics, or inefficient joins.

What You'll Get

• Complex SQL query writing multi-table joins, subqueries, window functions, CTEs (including recursive), pivoting/unpivoting, aggregations, reporting/analytics queries, from a plain-English requirement or a spec

Query optimization I'll take your slow query, analyze the execution plan, and rewrite it for measurable speed improvements (with before/after benchmarks)

Database performance tuning indexing strategy, query plan analysis, statistics/vacuum tuning, identifying bottlenecks

Root-cause diagnosis locking/blocking