[db<>fiddle](https://dbfiddle.uk) is similar to other tools like [SQL Fiddle](http://sqlfiddle.com) and [rextester](https://rextester.com) but specifically designed to be:

* friendly for markdown-based Q&A sites like Stack Overflow, TopAnswers and [Codidact](https://codidact.org)
* readable for longer, multi-step, code

---

Supported engines are:

engine|versions
------|--------
Db2 Developer-C|11.1 [^1]
Firebird|3.0, 4.0
MariaDB|~~10.2~~, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9
MySQL|5.5, 5.6, 5.7, 8.0
Node.js|18
Oracle|11.2, 18, 21
Postgres|~~8.4~~, 9.3, 9.4, 9.5, 9.6, 10, 11, 12, 13, 14, 15 Beta
SQL Server|~~2012~~, 2014, 2016, 2017, 2017 Linux, 2019, 2019 Linux
SQLite|~~3.8~~, ~~3.16~~[^2], 3.27, 3.39
YugabyteDB|2.6, 2.8

Upcoming features and work in progress:

* Other Node.js versions
* Other programming language engines
* Switch to CodeMirror 6 for better mobile support
* SQL Server 2022 engine (after GA)

[^1]: with lots of thanks to [@mustaccio](https://dba.meta.stackexchange.com/users/23721/mustaccio)
[^2]: currently offline for [security reasons](https://security-tracker.debian.org/tracker/CVE-2018-20346)