ToolHarbor
Developer Tools

SQL Formatter

Format SQL queries for readability.

Use the tool

Use SQL Formatter to turn dense queries into readable SQL before reviewing logic, debugging filters, or sharing a database issue.

Dev Workbench

SQL Formatter

Format SQL queries for readability.

Input

Result

Run the tool to see output.
Lines: 0Chars: 0

Why use SQL Formatter

  • Beautify long SELECT queries with JOINs, WHERE clauses, GROUP BY, and ORDER BY.
  • Review nested subqueries and CTEs before a code review or database ticket.
  • Clean SQL copied from logs, dashboards, ORMs, or monitoring tools.
  • Make query examples easier to read in documentation, migrations, and support threads.

About this tool

SQL formatting for code review

SQL Formatter adds structure to dense queries so tables, joins, filters, grouping, sorting, and subqueries are easier to review. This is useful before discussing performance or correctness.

Readable queries expose logic

Formatting helps reviewers see join conditions, boolean grouping, aliases, aggregation, and nesting. It does not prove that the query is valid for a specific database dialect.

Check dialect-specific syntax

PostgreSQL, MySQL, SQL Server, SQLite, and BigQuery have different functions and quoting rules. After formatting, confirm the query still matches the target engine.

Example usage

Input

select id,name from users where active=1 order by created_at desc

Output

SELECT\n  id,\n  name\nFROM users\nWHERE active = 1\nORDER BY created_at DESC;

Practical guide for SQL Formatter

Best practices

  • Format SQL before code review, incident analysis, or performance discussion.
  • Keep dialect-specific syntax in mind when copying formatted queries between systems.
  • Mask customer data and secrets before sharing query examples.

Common mistakes

  • Assuming formatted SQL is syntactically valid for every database.
  • Changing query logic while manually cleaning indentation.
  • Sharing production queries that include sensitive literal values.

How this tool works

  1. Step 1

    Open SQL Formatter and review the default example input.

  2. Step 2

    Paste your own input or upload source data when required.

  3. Step 3

    Run SQL Formatter to generate output instantly in the browser.

  4. Step 4

    Verify the output using the preview and formatting helpers on the page.

  5. Step 5

    Copy the final result and continue with a related tool if needed.

Use related links to continue your workflow and keep your output consistent across ToolHarbor pages.

JSON FormatterFormat JSON with readable indentation.HTML FormatterFormat HTML into a readable structure.CSS FormatterFormat CSS with consistent spacing and line breaks.XML FormatterFormat XML with consistent indentation.YAML FormatterFormat YAML with normalized spacing.

Continue exploring

Previous: Markdown PreviewNext: XML FormatterMore in Developer ToolsBrowse all tools

Popular workflows

JSON FormatterMerge PDFCrop Image OnlineTrim VideoCompress VideoMP4 to GIF

FAQ

Does SQL Formatter validate my query?

No. It improves readability, but your database engine still needs to parse and execute the query to prove syntax and object names are valid.

Can formatting improve query performance?

Formatting does not change performance by itself, but readable SQL makes it easier to find unnecessary joins, filters, and subqueries.

Should SQL keywords be uppercase?

Uppercase keywords are common because they separate SQL syntax from table and column names, but your team style guide may differ.

What should I review after formatting SQL?

Check joins, filters, aliases, grouping, ordering, limits, subqueries, CTEs, and any dialect-specific functions or quoted identifiers.