Best alternatives to provensql in 2026

When someone edits a SQL query in a pull request, the reviewer's real question is usually simple: 'does this change what the query returns?' — but answering that by reading the SQL is slow and error-prone, and most tools that try to help (linters, LLM-based reviewers) can only guess. provensql answers that question with actual mathematical proof instead of a guess: it parses both versions of the query, puts them into a canonical form, and uses an SMT solver to either prove they're equivalent or generate a concrete counterexample showing exactly how they differ. It returns one of four clear verdicts — EQUIVALENT, SCHEMA_CHANGE, DIFFERENT, or UNKNOWN — and when it says DIFFERENT, it hands you a concrete example input where the two queries actually diverge, rather than just asserting they do. It plugs into GitHub Actions and pre-commit hooks so a bad SQL change can be caught automatically before merge, and can optionally use catalog/schema information to reason about constraints more precisely. It's Apache 2.0 licensed and aimed at data teams shipping SQL through tools like dbt against warehouses like BigQuery.