now - Get the current time as a timestamp

The now function gets the current time at query execution time. This has some important features:

• now returns a timestamp in nanoseconds if supported by the runtime, otherwise it falls back to milliseconds.
• now is consistent no matter where it is invoked in the query, even multiple invocations.

Syntax

now(): timestamp

Example - Basic usage

Using now is a simple function without any arguments:

create now_time from now()

Example - Time since log generation

It is sometimes useful to know exactly how long it has been since a log was written. This can be done using now:

create time_since_write from now() - $m.timestamp

This will create a field time_since_write which is of type interval.