I will fix mysql sql query errors and improve slow queries

Get help with MySQL query errors, incorrect results and slow queries. I can fix joins, filters, aggregations and date calculations, review execution plans, and verify results against agreed examples. I also accept custom SQL for reports, dashboards, data quality checks and business data analysis.

Basic: one query error or wrong result. Standard: up to three related queries. Premium: up to five scoped queries with query-plan review and measured improvement notes. New report queries and larger analysis projects need a custom quote after schema and scope review. No fixed speed improvement is promised.

Delivery includes SQL, reproducible checks and clear verification notes. I have worked in programming since 2009, including backend development and data analysis.

Before ordering, share your MySQL version, schema, sanitized sample data, expected results, data size and deadline. Larger work can be split into agreed stages. Migrations, ongoing administration, infrastructure and production deployment require separate scope.