Query Rewriter

Automatically rewrite slow or messy SQL into clean, optimized queries

Paste any SQL query and the AI rewrites it for readability, performance, or both — preserving the original logic while eliminating inefficiencies.

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How it works

1

Paste the query to rewrite

Drop in any SQL — a slow production query, legacy code you inherited, or something generated by an ORM

2

Choose rewrite goal

Optimize for performance (fewer scans, better index usage), readability (formatting, aliases, CTEs), or both

3

Review the rewritten query

See the before/after diff with an explanation of every change — accept, reject, or refine further

Key benefits

  • Transform ORM-generated spaghetti SQL into clean, fast queries
  • Rewrite subqueries into CTEs for readability
  • Replace correlated subqueries with more efficient JOINs automatically
  • Fully transparent — every change is explained

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Start for free. No credit card required.

10 free AI prompts daily. Connect your database in under a minute.

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