Tools SQL & KQL Linter

SQL & KQL Linter

Detect anti-patterns, performance issues, and best practice violations in your queries. Everything runs in your browser — nothing is sent to a server.

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Client-side only

Your queries never leave your browser. All analysis is performed locally using JavaScript.

Multiple dialects

Supports T-SQL, Standard SQL, PL/SQL, MySQL, PostgreSQL, and KQL (Kusto Query Language).

27 lint rules

Detects anti-patterns, missing WHERE clauses, non-SARGable predicates, unused CTEs, and KQL-specific issues.