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startofmonth()
Applies to: ✅ Microsoft Fabric ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel
Returns the start of the month containing the date, shifted by an offset, if provided.
Syntax
startofmonth(date [, offset ])
Learn more about syntax conventions.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| date | datetime |
✔️ | The date for which to find the start of month. |
| offset | int |
The number of months to offset from the input date. The default is 0. |
Returns
A datetime representing the start of the month for the given date value, with the offset, if specified.
Example
range offset from -1 to 1 step 1
| project monthStart = startofmonth(datetime(2017-01-01 10:10:17), offset)
Output
| monthStart |
|---|
| 2016-12-01 00:00:00.0000000 |
| 2017-01-01 00:00:00.0000000 |
| 2017-02-01 00:00:00.0000000 |