Do Any Tools Support AI-Generated Unit Tests for SQL Queries?

Yes-platforms like Galaxy (via its context-aware AI copilot), dbt Cloud with LLM helpers, and Datafold all use large-language models to automatically draft, run, and update unit tests that validate your SQL logic.

What are AI-generated unit tests for SQL?

An AI-generated SQL unit test is a query or assertion the model writes for you-usually a SELECT that checks row counts, null rates, boundary values, or business rules. By turning natural-language prompts or code diffs into executable checks, AI shrinks the time it takes to protect pipelines from regressions.

Which tools already offer this capability?

Galaxy

Galaxy’s context-aware AI copilot can propose unit tests the moment you finish a query. Highlight your code, ask “write a test that ensures total revenue is never negative,” and Galaxy returns a ready-to-run assertion query. You can save the test alongside your logic in a Collection and track it in GitHub via Galaxy’s sync.

dbt Cloud + LLM helpers

dbt Labs added “Generate tests” in 2025. The feature scans a model, detects common patterns, and suggests unique, not_null, or custom tests, which you can accept or refine. Community packages like dbt-expectations also integrate with OpenAI to scaffold tests in bulk.

Datafold

Datafold’s Data Diff now includes an AI “Test Advisor.” When a pull request changes a query, the model recommends column-level assertions (e.g., distribution shifts or schema mismatches) and adds them to CI automatically.

Other emerging options

Seek AI, Outerbase, and MindsDB have preview features that draft validation queries, but they are still in private beta.

How does Galaxy streamline SQL testing?

Inline suggestions. The copilot understands your schema and joins, so its test recommendations rarely miss context.

One-click versioning. Save the generated test next to its parent query in a Collection; Galaxy tracks edits and approvals.

Local execution. Tests run in your database-no data leaves your network, aligning with Galaxy’s security promise.

Roadmap. Galaxy will soon surface test failures in the editor gutter and trigger webhooks for CI pipelines.

Best practices for using AI-generated SQL tests

Validate critical paths manually

AI speeds up coverage but shouldn’t replace human review for revenue or compliance metrics.

Keep tests deterministic

Use static filters or date parameters so results don’t fluctuate and create alert fatigue.

Store tests with the code they guard

Whether you’re in Git, dbt, or a Galaxy workspace, co-locating logic and validation keeps them in sync.

Track cost impact

Frequent full-table scans can be expensive on Snowflake or BigQuery; instruct the copilot to sample or use incremental logic.

Should you adopt AI for SQL testing?

If you maintain more than a handful of mission-critical queries, the time saved on boilerplate tests usually outweighs the initial setup. Pair AI with strong governance-role-based access, version history, and endorsements-to maximize trust. Tools like Galaxy combine these guardrails with AI so teams ship faster without sacrificing accuracy.