How to identify the unit of measure of Extended Events durations

Even if I use Extended Events almost every day, I always forget the unit of measure of each duration counter, since they’re basically arbitrary; Seconds, milliseconds, microseconds? Whatever, it depends on the dev that implemented that specific counter.

That’s why I’ve added to Tsql.tech Github repository the following code that extracts the descriptions from XE DMVs in order to identify the unit of measure:

SELECT [p].[name] [package_name],
       [o].[name] [event_name],
       [c].[name] [event_field],
       [DurationUnit] = CASE
                            WHEN [c].[description] LIKE '%milli%' THEN SUBSTRING([c].[description],
                            CHARINDEX('milli', [c].[description]), 12)
                            WHEN [c].[description] LIKE '%micro%' THEN SUBSTRING([c].[description],
                            CHARINDEX('micro', [c].[description]), 12)
                            ELSE [c].[description]
                        END,
       [c].type_name [field_type],
       [c].[column_type] [column_type]
FROM   sys.dm_xe_objects o
JOIN sys.dm_xe_packages p
ON o.package_guid = p.guid
JOIN sys.dm_xe_object_columns c
ON o.name = c.object_name
WHERE  [o].[object_type] = 'event'
       AND [c].[name] = 'duration';

For your convenience, here’s the output of the query above in Azure SQL DB

You’re welcome!