thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-09-29 13:10:48 +00:00
Code Issues Packages Projects Releases Wiki Activity
13d9a4eebe
ClickHouse/docs/en/dicts/index.md
BayoNet 13d9a4eebe Sources for english documentation switched to Markdown. 
Edit page link is fixed too for both language versions of documentation.
2017-12-28 18:13:23 +03:00

337 B
Raw Blame History

Dictionaries

A dictionary is a mapping (key -> attributes) that can be used in a query as functions. You can think of this as a more convenient and efficient type of JOIN with dimension tables.

There are built-in (internal) and add-on (external) dictionaries.

.. toctree::

   external_dicts
   internal_dicts