max() (aggregation function)
Applies to: ✅ Microsoft Fabric ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel
Finds the maximum value the expression in the group.
Note
This function is used in conjunction with the summarize operator.
Syntax
max(expr)
Learn more about syntax conventions.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| expr | string |
✔️ | The expression used for the aggregation calculation. |
Returns
Returns the maximum value of expr across the group.
Tip
This gives you the max on its own. If you want to see other columns in addition to the max, use arg_max.
Example
This example returns the last record in a table.
StormEvents
| summarize LatestEvent=max(StartTime)
Output
| LatestEvent |
|---|
| 2007-12-31T23:53:00Z |