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Applies to: ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel
Subtracts the given timespan from the current UTC time.
Like now(), if you use ago() multiple times in a single query statement, the current UTC time
being referenced is the same across all uses.
ago(timespan)
Learn more about syntax conventions.
| Name | Type | Required | Description |
|---|---|---|---|
| timespan | timespan |
✔️ | The interval to subtract from the current UTC clock time now(). For a full list of possible timespan values, see timespan literals. |
A datetime value equal to the current time minus the timespan.
All rows with a timestamp in the past hour:
T | where Timestamp > ago(1h)