Syntax-only is a deliberate boundary
The validator does not open a connection, inspect a catalog, or ask a remote service. Unknown tables and unavailable functions therefore remain unresolved.
- Input
- SQL
- Dialects
- 4 explicit
- Runtime
- Browser
Validate SQL syntax without running a query
Parse one explicit SQL dialect and report syntax status, statement count, and statement types.
Local processingNo sign-upNever executed
Validate SQL
Inputs stay in this browser tab. Parser-heavy work uses a tighter 256 KiB safety cap.
Syntax report
No result is placed in a URL, account, API, or remote log.
What this tool does
Bounded, explicit-dialect processing
A valid parse proves only that the selected grammar accepts the text. Tables, columns, permissions, constraints, extensions, data types, and runtime behavior require the target database.
Bounded diagnostics remain editable
Malformed SQL returns a local diagnostic while the original source stays in the editor.
The parser runs locally under byte, statement, AST-node, depth, row, column, diagnostic, and output limits. It never connects to a database or resolves files and URLs.
Questions and answers
Related SQL tools
SQL FormatterValidate the selected dialect, then apply readable whitespace and keyword casing without executing the statement.SQL Query AnalyzerSummarize syntax-tree facts for the selected dialect without claiming runtime plan or cost information.SQL Query ComparatorParse two statements under one dialect and report bounded structural additions, removals, and changes.