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Online SQL Validator

Validate SQL scripts as a fast syntax smoke test before migrations, seed runs, and import automation.

Validating SQL in your browser (no upload to a server). SQL is parsed with sql-formatter (MySQL dialect) as a syntax smoke test.

Other validators
JSON YAML XML CSV INI SQL HTML TOML Markdown JavaScript CSS Shell Dockerfile
Input
Line 1, Column 1
File

Plain text or typical extensions for this format

Quick use cases

Migration script sanity checks Seed script validation CI database test prep Query syntax troubleshooting

Common validation errors

  • Invalid statement order
  • Broken quotes
  • Dialect-specific syntax mismatch
  • Malformed multi-row inserts

Validation workflow

  1. Paste SQL
  2. Run validator
  3. Fix syntax issues
  4. Test in target database engine

Sample structure

CREATE TABLE users(id INT PRIMARY KEY, email VARCHAR(190));
INSERT INTO users(id,email) VALUES (1,'john@example.com');

Best practices

  • Validate before migration rollout
  • Keep scripts idempotent where possible
  • Separate schema/data scripts
  • Test in target dialect

Validator FAQ

Is SQL validation engine-specific?

This is a syntax smoke check; always test final scripts in your target database engine.

Can it catch migration risks?

It catches basic syntax issues early, reducing avoidable migration failures.

Should I validate generated SQL inserts?

Yes, especially for bulk import scripts produced from CSV/JSON pipelines.