What changes in this tool
Place common SQL clauses on separate lines. Indentation and line breaks expose structure while preserving the supported input tokens. The SQL formatter puts common clauses such as SELECT, FROM and WHERE on separate lines. It leaves quoted values intact and refuses comments for which a lightweight layout rewrite may be ambiguous. Use it to inspect a query, then test against the intended database dialect.
Know the format
SQL is a family of dialects rather than one identical grammar in every database. Keywords such as SELECT, FROM and WHERE are useful visual landmarks, while quoted strings and identifiers must retain their exact characters. This editor recognizes common quotes and comments but does not parse a database schema, resolve names or execute a query. The formatter adds clause breaks for ordinary statements and declines comments where a lightweight rewrite would be ambiguous. The compact tool only collapses repeated spaces and line breaks outside quoted values, keeping line-comment boundaries. Before using output in a database, check its dialect, parameter binding and execution plan in the actual environment.
A dependable workflow
Formatting is most useful during review or debugging, when indentation can expose a missing nesting level or an unexpected sibling. Paste a complete, representative fragment and run the formatter once. Read the output from the outermost structure inward, paying attention to where each element, block or clause begins and ends. This page deliberately avoids pretending to be a compiler for every possible extension of the language. It may reject source whose meaning depends on advanced constructs. After copying the result, run the normal validator or test suite for the project in which it will be used. If you plan to commit the formatted text, inspect the diff so changes in layout do not hide an accidental change in a literal or data value.
Check the result
Keep the original next to the output and test a small known example before handling a large document. Compare meaningful content, not only file size or the number of lines. Check names, quoted strings, non-ASCII characters, line endings and any repeated fields after the transformation. A syntactically readable result does not validate a schema, prove that code executes, or establish that data is safe to publish. This site processes the entered text in the browser and displays the result as text, but the copy you paste into another application will follow that application’s rules. If the tool rejects an input, do not remove unexplained characters merely to get an output: identify which construct is outside the supported subset and use a dedicated parser when necessary.