Validar SQL syntax before execution
Validar SQL queries for syntax errors before sending to the database. Catch typos, missing keywords, and structural issues early.
- 1
SQL syntax validation parses the query without executing it, catching errors like missing FROM, unbalanced parentheses, invalid keywords, and wrong column references. This is useful for dynamic SQL generation, user input validation, and CI/CD checks.
- 2 Formateador SQL →
Formatear the SQL query to parse and validate its structure. The formatter will fail on syntax errors, revealing the issue. A successfully formatted query has valid syntax (though it may still fail at runtime due to missing tables or columns).
- 3 Validador JSON →
If the SQL is generated from a JSON template, validate the JSON structure first. Many SQL errors come from malformed input data. Validate the input, then format the generated SQL.
Preguntas frecuentes
- Does syntax validation guarantee the query will run?
- No. Syntax validation checks structure (keywords, clauses, parentheses). It does not check semantics (table/column existence, data types, permissions). A syntactically valid query can still fail at runtime. Use EXPLAIN or a dry-run for semantic validation.
- How do I validate SQL in CI/CD?
- Use a SQL parser (sqlparse for Python, node-sql-parser for JavaScript) to validate all .sql files. For migrations, run them against a test database and rollback. For ORM queries, enable query logging in tests and validate the generated SQL.