-> Below TSQL can be used to query commandlog table created by Ola Hallengren’s Index Maintenance script to check Alter Index duration.

select
[DatabaseName]
,[SchemaName]
,[ObjectName]
,[ObjectType]
,[IndexName]
,[IndexType]
,[CommandType]
,ExtendedInfo.value('(/ExtendedInfo/PageCount)[1]', 'int') as Page_Count,convert(decimal(5,2),ExtendedInfo.value('(/ExtendedInfo/Fragmentation)[1]', 'Float')) as Fragmentation
, CAST(DATEDIFF(second, StartTime, EndTime) / 60 / 60 / 24 / 7 AS NVARCHAR(50)) + ':'
+ CAST(DATEDIFF(second, StartTime, EndTime) / 60 / 60 / 24 % 7 AS NVARCHAR(50)) + ':'
+ CAST(DATEDIFF(second, StartTime, EndTime) / 60 / 60 % 24 AS NVARCHAR(50)) + ':'
+ CAST(DATEDIFF(second, StartTime, EndTime) / 60 % 60 AS NVARCHAR(50)) + ':'
+ CAST(DATEDIFF(second, StartTime, EndTime) % 60 AS NVARCHAR(50)) + '' as "w:d:h:m:s"
, DATEDIFF(second, StartTime, EndTime) [Duration in Sec]
,[StartTime]
,[EndTime]
from [dbo].[Commandlog]
order by DATEDIFF(second, StartTime, EndTime) desc

Thank You,
Vivek Janakiraman

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