split( ) Query Function

Split an event structure created by json array into distinct events. When Humio ingests JSON arrays, each array entry is turned into a separate attributes named [0], [1], … This function takes such an event and splits it into muliple events based on the prefix of such [N] attributes, allowing for aggregate functions across array values. It is not very efficient, so it should only be used after some agressive filtering.

Parameters

Name Type Required Default Description
field string No _events Field to split by
strip bool No false Strip the field prefix when splitting (default is false)

field is the unnamed parameter.

Examples

In GitHub events, a PushEvent contains an array of commits, and each commit which gets expanded into subattributes of payload.commit_0, payload.commit_1, …. Humio cannot sum/count, etc across such attributes. Expands each PushEvent into one PushEvent for each commit so they can be counted.

type=PushEvent | split(payload.commits) | groupby(payload.commits.author.email) | sort()