Hour (hour)
- Juan Tomás Alonso Nieto (Deactivated)
- Borja Moro Moreno
- Former user (Deleted)
Description
Returns the duration representation of 1 hour, or the hours corresponding to a given timestamp. Optionally, you can check it in a time zone different than yours.
How does it work in the search window?
Select Create field in the search window toolbar, then select the Hour operation.
This operation can be applied with no arguments. In this case, you will get the duration representation of 1 hour (duration data type, 1h).
If you add the Timestamp argument, you will get the hours considering your current timezone. Optionally, you can add the Time zone argument to see the hours in the specified time zone.
Argument | Data type | Description |
|---|---|---|
Timestamp mandatory | timestamp | You can either select a field with that data type or introduce it manually. In case you want to introduce it, note that this value should be a date: Year-Month_Day Hour:Minute:Second.Millisecond (yyyy-MM-dd HH:mm:ss.SSS) → You can skip seconds and milliseconds. |
Time zone | string | You need a valid string format the app can recognize so it returns meaningful results. If you leave the field empty or introduce a value the app cannot recognize, the default Time Zone is UTC. You can use one of the following methods:
Be aware that some of the codes coincide, as CST could mean Central Standard Time or China Standard Time. In that case, it would be advisable to avoid using codes and introduce any of the other formats mentioned. |
The data type of the new field values will be integer and the values shown will be 0-23.
Be aware that timestamps taking place during summer will be affected in the time zones in which they set the clock forward during summer. For example, Europe/Madrid (CET-Central European Time), which is UTC+1, becomes UTC+2 during summertime and thus timestamps in August will be affected when using that time zone. Be also aware that summertime differs between the Northern and Southern Hemispheres.
Example
In the siem.logtrust.web.activity table, we want to create a field showing the hours of the dates in our eventdate field. To do it, we will create a new field using the Hour operation.
The arguments needed to create the new field are:
Timestamp - eventdate field
Click Create field and you will see the following result:
The field shows 8 in the events that took place at that hour, regardless of the minute, second and millisecond, which corresponds to the hour shown in the eventdate field.
Now we want to create a field in the siem.logtrust.web.activity table to show in EET time (Eastern European Time, UTC+2) the hours of the dates in our eventdate field. To do it, we will create a new field using the Hour operation.
The arguments needed to create the new field are:
Timestamp - eventdate field
Time Zone - EET
Click Create field and you will see the following result:
The field shows 9 instead of 8 because in that time zone they are an hour ahead.
How does it work in LINQ?
Use the operator select... as... and add the operation syntax to create the new field. These are the valid formats for the Hour operation:
hour()→ Use this expression to get the representation of one hour in duration data type (1h).hour(timestamp) → Use this expression to get the hours of the given timestamps, according to your current time zone.hour(timestamp, timezone_string) →  Use this expression to get the hours of the given timestamps, according to the specified time zone.
Example
You can copy the following LINQ script and try the previous examples on the siem.logtrust.web.activity table.
from siem.logtrust.web.activity
select hour(eventdate) as eventdate_hoursfrom siem.logtrust.web.activity
select hour(eventdate, "EET") as eventdate_hour