SQL Formatter

Format and pretty-print SQL queries with proper indentation and keyword casing.

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Input
Output
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About sql formatter

SQL Formatter keeps its state in memory and nowhere else. That is why it forgets everything on reload, and why it cannot leak anything.

Once the page has loaded it needs nothing further from the network. Work on a plane, on a train, or behind a firewall that blocks everything.

You will find it under SQL & databases, alongside 27 other tools for the same sort of job.

Supports SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, and complex JOIN queries.

How to use it

01
Start it
Every control is on the tool itself. Keyboard shortcuts, where there are any, are listed beside it.
02
Watch it run
It updates in the page as you go. Nothing is sent anywhere, so it keeps working with the network off.
03
Close when done
Nothing is stored between visits. Reloading gives you a clean start rather than picking up where you left off.

Examples

Format SELECT Query
Format a complex SQL query with proper indentation and keyword casing
Input
select u.name, o.total from users u inner join orders o on u.id = o.user_id where o.total > 100 order by o.total desc limit 10
Output
SELECT
  u . name,
  o . total
FROM
  users u
  INNER JOIN orders o
  ON u . id = o . user_id
WHERE
  o . total > 100
ORDER BY
  o . total DESC
LIMIT
  10

Questions

Does SQL Formatter work offline?+

Yes. It is JavaScript running in this tab, so once the page has loaded it needs nothing further from the network. Put the machine in flight mode and it carries on. Nothing you do here is sent anywhere, because there is nowhere for it to go.

Does it remember anything between visits?+

No. Reload the page and it starts from nothing. There is no account, no saved state and no cookie holding your last session. That is a deliberate trade: it cannot lose your data because it never keeps any.

Is it accurate?+

Timing comes from performance.now(), the high resolution clock the browser provides, rather than from setInterval, which drifts by a few milliseconds every tick and compounds over minutes. What can still shift things is the browser throttling a tab in the background, so leave it visible if the timing matters.

Does it make a sound?+

Where a sound makes sense, it is generated with the Web Audio API rather than loaded as a file, so there is nothing to download and nothing to block. Browsers refuse to start audio until you have interacted with the page, which is why the first press is what switches it on.

Can I use SQL Formatter on a phone?+

Yes. The controls are sized for touch and the layout collapses to one column on a narrow screen. Bear in mind that a phone locking its screen will suspend the page, and timing stops with it.