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sql analyze performance index slow query improve

SQL Query Analyzer

Paste a SQL query to detect performance issues using rule-based static analysis. Flags common anti-patterns like SELECT *, leading-wildcard LIKE, ORDER BY RAND(), and DELETE/UPDATE without WHERE. Add CREATE TABLE definitions to also diagnose missing indexes.

USAGE

3 simple steps

  1. 1Paste the SQL query you want to analyze
  2. 2Optionally paste CREATE TABLE definitions to enable index analysis
  3. 3Click Analyze to see a list of issues and improvement suggestions

FAQ

Frequently Asked Questions

Q. What issues can it detect?

A. Common anti-patterns including SELECT *, leading-wildcard LIKE, functions on WHERE columns, ORDER BY RAND(), and DELETE/UPDATE without WHERE.

Q. Is the accuracy lower without table definitions?

A. Major anti-patterns are detected from SQL alone. Adding CREATE TABLE definitions enables missing index analysis.

Q. Does this use AI?

A. No. This is rule-based static analysis. Your SQL is never sent to any server.

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