Tools

SQL Index Usage Analyzer for Query Patterns

Analyze SQL WHERE and JOIN clauses to suggest index candidates.

SQL Index Usage Analyzer

Review SQL queries and identify columns that are likely index candidates. This helps developers catch performance issues before running heavy workloads.

How to use the SQL Index Usage Analyzer

  1. Paste your SQL query.
  2. Click Analyze.
  3. Review the suggested index candidates.

Common use cases

  • Auditing slow queries in logs.
  • Preparing indexes before load testing.
  • Reviewing schema changes during code review.
  • Learning which columns drive lookups.

Tips & notes

  • Always validate suggestions with EXPLAIN.
  • Consider read/write tradeoffs before adding indexes.
  • Indexes are most useful for selective filters.

Related developer tools

  • SQL Query Cost Estimator
  • SQL Minifier
  • JSON Formatter

FAQ

Is it exact?
Heuristic based on WHERE clauses.
Does it replace database EXPLAIN?
No. It provides quick guidance only.
Does it handle composite indexes?
It can suggest multi-column candidates based on patterns.