Assigns the current value as milliseconds since 1970.
When used in a non-live query, the value of start is fixed to when the query was issued. For live queries, the value of start is the live value of current start time, which can divert between Humio nodes.
|string||false||_start||Name of output field.|
curr the value of
curr := start()
use start() in an assignment
isOld := (start()-@timestamp) > 1000