Online SQL Script Formatter

A dialect-aware online tool that formats SQL scripts, preserves comments, and highlights syntax issues for developers and DBAs.

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2,236+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Online SQL Script Formatter processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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About This Tool

The Online SQL Script Formatter processes raw SQL text to produce a clean, readable script that respects the selected dialect. It helps developers, DBAs, and data engineers achieve uniform style across teams. The tool operates by recognizing dialect-specific grammar and applying formatting rules without changing semantics.
It preserves inline and block comments, complex whitespace, and comment anchors while reformatting. The result is suitable for review, repository commits, or deployment preparation and minimizes diffs caused by inconsistent spacing. Conceptually, input is tokenized, parsed into a dialect-aware representation, and then reassembled with consistent indentation, line wrapping, and keyword casing.
This tool differentiates by offering dialect-aware profiles, customizable line width and indent size, and robust linting that surfaces syntax anomalies, unclosed quotes, or missing semicolons without executing the script. It benefits developers, DBAs, QA teams, and educators working with multi-dialect SQL codebases.
Common use cases include preparing SQL for code reviews, standardizing legacy scripts, and supporting educational tutorials where consistent formatting clarifies SQL structure.

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How to Use

Provide inputs: paste the SQL script, select dialect, and set preferences.
Configure: adjust line width, indent, and keyword casing as needed.
Run formatting: execute the formatter to obtain a cleaned script.
Review outputs: inspect the formatted script and lint issues with positions.
Export or copy: save the result to a file or paste into a repository.

Frequently Asked Questions

Find Quick Answers

How does dialect support work?

The formatter applies dialect-specific rules for keyword casing, identifier quoting, and statement termination. It can adapt to MySQL, PostgreSQL, SQL Server, Oracle, and SQLite profiles, ensuring the output adheres to each standard without changing semantics.

Can comments be preserved?

Yes. Both inline and block comments are preserved and aligned with the reformatted code, maintaining their positions relative to statements and improving traceability during reviews.

How are issues reported?

Issues are reported with line and column coordinates, a code class, and a concise message. The result set includes a summary and can be exported for ticketing or documentation.

Does reformatting alter query semantics?

No. The formatter only changes whitespace, indentation, and surface formatting. It does not execute queries or modify the underlying logic or data references.

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