Aggregation Functions
=====================

Functions that compute summary values across groups, as defined by the SELECT ... GROUP BY clause.

* :func:`~fun.count` - Count the number of input rows.
* :func:`~fun.first` - Keep the first of the values seen.
* :func:`~fun.last` - Keep the last of the values seen.
* :func:`~fun.max` - Compute the maximum of the values.
* :func:`~fun.min` - Compute the minimum of the values.
* :func:`~fun.sum` - Calculate the sum of the numerical argument.