SQL optimization for MySQL & SQL Server
Your slow query,
rewritten and timed.
Paste in a query that is taking too long. We rewrite it, run the old and new versions side by side in a throwaway database, and tell you how much time the rewrite actually saved.
Side-by-side SQL review
Every line we changed, and nothing hidden.
Real benchmark data
Execution time and rows examined, with a check that both versions return the same rows.
No production access
A fresh database per run, deleted afterwards.
98%
median fewer rows scanned