AVG_EACH

Computes the average (arithmetic mean) for each group.

Syntax

AVG_EACH([MAX_VALUES,] GROUP, VALUE)

Arguments

MAX_VALUES

Type: integer

Default: no limit

(Optional) The maximum number of groups. Groups beyond this amount are discarded.

In some cases, discarding groups via this option may cause some data to be discarded from groups that would otherwise have been kept.

GROUP

Type: any

The field by which to group the results.

VALUE

Type: any type

The field to be averaged.

Returns

Type: array

Returns an array of key-value pairs where each GROUP is matched to the average VALUE seen for that group.