CommandDescription
INNER JOINReturns matching rows from both tables
LEFT JOINAll rows from left + matching from right
RIGHT JOINAll rows from right + matching from left
FULL OUTER JOINAll rows from both tables
CROSS JOINCartesian product of both tables
SELF JOINTable joined with itself
NATURAL JOINJoin on columns with same name
LEFT OUTER JOINSame as LEFT JOIN
RIGHT OUTER JOINSame as RIGHT JOIN

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About SQL Joins

SQL Joins solves a specific problem that comes up daily for anyone dealing with developer and design work: doing it once, fast, without an account. Built to be the kind of tool you bookmark and use weekly: no surprises between visits, no degraded free tier, and a UI that gets out of the way. If you find yourself doing this regularly, the rest of the developer suite covers most adjacent tasks with the same approach.

When you'd reach for SQL Joins

  • You're cleaning up a folder of files that accumulated over a project and need to standardize them.

    Designers, writers, and developers wrapping up deliverables.

    Drop each file in, copy the output, move on.

  • You need to handle a one-off task right before a meeting and don't have time to install anything.

    Anyone working remotely on a borrowed or restricted machine.

    Open the page, get the result, paste it into your doc — under a minute.

  • You're on a public or shared machine and don't want to leave traces of what you're working on.

    Travelers, contractors, anyone working from a friend's computer.

    Nothing is uploaded, nothing persists if you're not signed in.

  • You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.

    Marketers and ops people whose primary tool is metered.

    Stay productive without burning credits.

Frequently asked about SQL Joins

Will SQL Joins change my original file?
Never. SQL Joins only reads your input file and produces a new output file.
What browsers does SQL Joins support?
Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
Is SQL Joins really free?
Yes — SQL Joins is free for unlimited personal use, with no account required and no watermark on the output.
Can I use SQL Joins commercially?
Yes. The output of SQL Joins belongs entirely to you, with no licensing restrictions.
Does SQL Joins work on mobile?
Yes, SQL Joins is fully responsive and tested on iOS Safari and Android Chrome.