Concatenates the values of a list of fields into a value in a new field.

as[string]false_concatThe output name of the field to set.
field[string]true Fields to concatenate. [a]

[a] When you provide only one parameter, the implied parameter is field


This example will concatenates the values of the fields f1 and f2 from each event into the field combined:

concat([f1, f2], as="combined")