SQL Analyzer
Paste a SQL query to get a full insight report — headline metrics, detailed statistics, warnings, and improvement suggestions. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
SELECT * FROM a JOIN b ON a.id=b.aid WHERE …
Example Output
joins, subqueries, SELECT *, complexity
How to Use
- 1Paste the a SQL query you want to analyze into the input box.
- 2If options are available (e.g. SQL dialect or regex flags), set them as needed.
- 3Click Analyze (or press Ctrl+Enter).
- 4Read the report: headline metric cards, detailed statistics, warnings, and recommendations.
About SQL Analyzer
SQL Analyzer parses a query (pick the dialect) and reports the count of statements, JOINs, subqueries, WHERE clauses, table references, and SELECT * usage. It computes a complexity score and gives performance tips (e.g. avoid SELECT *, index JOIN columns, CTEs for subqueries).
Static analysis only — the query is NOT run against any database.
FAQ
Is my data sent to a server?
No. The entire analysis runs in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.
How is this analyzer different from a parser, validator, or viewer?
An analyzer produces an insight report — metrics, statistics, warnings, and recommendations — to help you judge the quality or characteristics of the input. A parser breaks it into structure, a validator gives a valid/invalid verdict, and a viewer just displays it. An analyzer focuses on "how good / what are its characteristics".