How it works
This lightweight formatter is dialect-neutral and focuses on readability. It does not parse or validate database-specific syntax.
Normalize whitespace, then add breaks before common clauses.
Debugging scenario
Format a reduced query to expose its major clauses, then run the original statement through the database parser or an explain-only workflow in a non-production environment. Compare quoted identifiers, strings, comments and dialect-specific operators before accepting the formatted text.
How to interpret the result
The formatter normalizes whitespace and inserts line breaks around a limited clause list. It does not build an abstract syntax tree, validate syntax or understand procedural SQL. Formatting can therefore be useful for reading a simple query but unsafe as an automatic code rewrite.
Input reference
- SQL query
- Example default: Sample input included
Common mistakes
- Pasting secrets, credentials, customer records or other production data into a browser tool or shareable URL.
- Formatting SQL that contains whitespace-sensitive strings or comments and assuming meaning is preserved.
- Treating a convenient preview as validation by the target runtime, parser, database or security control.
Before using the result
- Reduce the input to a synthetic example that still reproduces the behavior.
- Parse and test the original and proposed query with the exact database dialect before replacing code.
- Add the accepted input and expected output to the project regression tests before release.
Questions to check before production use
Does it validate SQL?
No. It formats common clauses but does not replace a database parser.
Which SQL dialects work?
The output is intentionally generic; review dialect-specific syntax yourself.
Independent developer utility. Review output before using it in production.