FQL v4 will be decommissioned on June 30, 2025. Ensure that you complete your migration from FQL v4 to FQL v10 by that date.

For more details, review the migration guide. Contact support@fauna.com with any questions.

ToMillis

This reference topic applies to FQL v4. Go to this page for the latest FQL v10 reference topics.

 
ToMillis( value )
to_millis( value )
ToMillis( value )
ToMillis( value )
ToMillis( value )

Description

The ToMillis function converts a value to the number of milliseconds since Unix epoch (midnight, January 1, 1970), if possible.

Attempting to convert a value to a number of milliseconds which has no numeric representation results in an "invalid argument" error.

Parameters

Parameter Type Definition and Requirements

value

Any

The value to attempt to convert to a number of milliseconds since Unix epoch.

If you provide a Number, it is interpreted as the number of microseconds since Unix epoch.

Returns

A Number representing the number of milliseconds since Unix epoch.

Examples

The following query calls ToMillis twice:

  1. To convert 1 second after Unix epoch into milliseconds.

  2. To convert the current transaction time into milliseconds.

client.query([
  q.ToMillis(q.Epoch(1, 'second')),
  q.ToMillis(q.Time('2020-07-06T12:34:56.789Z')),
])
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))
[ 1000, 1594038896789 ]
result = client.query(
  [
    q.to_millis(q.epoch(1, 'second')),
    q.to_millis(q.time('2020-07-06T12:34:56.789Z')),
  ]
)
print(result)
[1000, 1594038896789]
result, err := client.Query(
	f.Arr{
		f.ToMillis(f.Epoch(1, "second")),
		f.ToMillis(f.Time("2020-07-06T12:34:56.789Z")),
	})

if err != nil {
	fmt.Fprintln(os.Stderr, err)
} else {
	fmt.Println(result)
}
[1000 1594038896789]
try
{
    Value result = await client.Query(
        Arr(
            ToMillis(Epoch(1, "second")),
            ToMillis(Time("2020-07-06T12:34:56.789Z"))
        )
    );

    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}
Arr(LongV(1000), LongV(1594038896789))
[
  ToMillis(Epoch(1, 'second')),
  ToMillis(Time('2020-07-06T12:34:56.789Z'))
]
[ 1000, 1594038896789 ]
Query metrics:

  •    bytesIn:  93

  •   bytesOut:  33

  • computeOps:   1

  •    readOps:   0

  •   writeOps:   0

  •  readBytes:   0

  • writeBytes:   0

  •  queryTime: 4ms

  •    retries:   0

Is this article helpful? 

Tell Fauna how the article can be improved:
 Visit Fauna's forums or email docs@fauna.com

Thank you for your feedback!