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English
$
USD
I will optimize your slow sql queries and database schema
Senior Consultant
I work on the parts users never see: services, pipelines, and datastores that have to be correct at three in the morning. Most of my time goes to microservices architecture, REST and GraphQL APIs, ETL...
About this Gig
A query that takes nine seconds usually does not need a bigger server. It needs a different plan.
I read the EXPLAIN ANALYZE output, find what is actually costing the time - a missing index, a bad join order, a function wrapping an indexed column, a subquery that should be a join - and fix the cause.
In my day job, redesigning a reporting schema cut query execution time by around 45 percent. On another system, warehouse and query optimisation saved about 20 percent of cost.
What you get:
- Before and after timings, measured, not estimated
- The rewritten query and any index changes as runnable SQL
- A short written explanation of what was wrong and why the fix works
Databases: PostgreSQL, MySQL, Snowflake, Oracle.
Send me the query and your EXPLAIN ANALYZE output before you order. If there is no meaningful room to improve it, I will tell you that instead of taking the order.
Background and references at azizkhan-ak.github.io.
Platform:
MySQL
•
PostgreSQL
•
Other
