ClickHouse/docs/en/agg_functions/index.md

Aggregate functions

Aggregate functions work in the normal way as expected by database experts.

ClickHouse also supports:

• Parametric aggregate functions, which accept other parameters in addition to columns.
• Combinators, which change the behavior of aggregate functions.

Table of Contents

.. toctree::
    
   reference
   parametric_functions
   combinators