Skip to content

About this site

This site is the successor to the Mediawiki site.

It reflects the work of the Kx community since 1993, has many authors, and continues to evolve.


Truncated GitHub URLs are prefixed with the GitHub icon and omit the prefix.

For example, read KxSystems/kdb as


The wiki’s Reference section, organised by glyphs, was a good tool for reading q. It was easy to find, for example, all the possible meanings of $. On the other hand, a writer looking for tools to convert between datatypes and representations would have to explore most of the Reference section to be confident she had found them all.

The new site reference has three aims:

  • to be a fast prompt for things already learned
  • to help reading by showing what terms mean
  • to help writing by categorising the tools by semantic topic


A finished work is exactly that, requires resurrection.
John Cage, “Lecture on Nothing”, 1949

The repository for this site is KxSystems/docs. The contribution model is GitHub and Forking Workflow.

To contribute, submit a pull request.

Honor roll

We gratefully acknowledge contributions by pull requests from

  • Alexander Belopolsky
  • Aleks Bunin
  • Angus Wilson
  • Andrew in New York
  • Chris Shucksmith
  • Cillian Reilly
  • Conor McCarthy
  • David Z. Han
  • Esperanza Lopez Aguilera
  • Geo Carncross
  • James Hanna
  • kylenarocroc
  • Sean Keevey
  • Sean O’Hagan
  • Rian O’Cuinneagain
  • Rikesh
  • Thomas Smyth
  • Sergey Vidyuk
  • Simon Shanks
  • William Da Silva


This work is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons License


This site includes images for which Kx holds neither copyright nor permission. These images serve as links to their original sites. We understand this to be fair use.

If you are a copyright holder and object to this use, please write to


This site is a project of the Librarian.

A librarian’s job is to put information where people can find it.