SQL Validator
Check SQL syntax & structure for errors.
This free SQL validator checks your query against a real per-dialect parser for 19 databases — MySQL, PostgreSQL, SQL Server (T-SQL), Oracle (PL/SQL), SQLite, BigQuery, Snowflake, Redshift, Spark, Trino, DuckDB, ClickHouse and more. Pick your dialect and it flags genuine syntax errors with line numbers, then layers on structural lint notes: unbalanced parentheses, unterminated strings or quoted identifiers, trailing commas, a SELECT with no FROM, misplaced clause ordering (e.g. WHERE after GROUP BY), and unclosed block comments. It validates well-formedness, not table or column existence, so it won't run your query.
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