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yutils
Example

Input (minified SQL)

SELECT id, name, email FROM users WHERE active = true AND created_at > '2026-01-01' ORDER BY created_at DESC LIMIT 10;

Output (formatted)

SELECT
  id,
  name,
  email
FROM
  users
WHERE
  active = TRUE
  AND created_at > '2026-01-01'
ORDER BY
  created_at DESC
LIMIT
  10;

Note

Supports PostgreSQL, MySQL, SQLite, MSSQL, BigQuery, and others. CTEs, window functions, and JOINs all get indented properly.

Usage / FAQ

When to use

  • Tidy SQL quickly without firing up DBeaver / DataGrip / MySQL Workbench
  • Make SQL readable before pasting into issues, Slack, or Notion
  • Break down complex CTEs, subqueries, and JOINs visually
  • Normalize keyword casing across dialects (PostgreSQL, MySQL, BigQuery, …)
  • Self-review queries before code review

FAQ

Q.Which SQL dialects are supported?
A.PostgreSQL, MySQL, SQLite, MSSQL, MariaDB, BigQuery, Snowflake, Redshift, and others. The dialect option changes keyword handling.
Q.Can formatting fail?
A.If the SQL has syntax errors, only part of it may be formatted (or the original may pass through). Try a different dialect option, or validate the SQL first.
Q.Is the query actually executed?
A.No — this tool only formats. There is no DB connection and no execution. Your SQL never leaves the browser.
Fun facts

  • SQL traces back to Edgar F. Codd's 1970 paper 'A Relational Model of Data for Large Shared Data Banks' — the mathematical foundation of the relational model. On top of it, IBM's San Jose lab built SEQUEL (System Englishlike QUEry Language) in 1974, later shortened to SQL after a trademark conflict.

    Wikipedia — SQL history

  • SQL standards are managed by ANSI/ISO — SQL-86 (the first), SQL-92 (the most influential, where most of 'SQL syntax' was nailed down), then SQL:1999, :2003, :2008, ..., :2023. But every real database (Postgres / MySQL / Oracle) ships its own dialect, so 100% compatibility is a fantasy.

    Wikipedia — SQL standards

  • The uppercase-keywords convention (`SELECT`, `FROM`, `WHERE`) is a relic of 1970s–80s monochrome terminals — without syntax highlighting, case differences provided visual structure. Modern IDEs colorize everything, but the convention stuck. Lowercase SQL is exactly equivalent — purely an aesthetic choice for readability.

    Wikipedia — SQL syntax

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