Ver el porcentaje de fragmentación de un índice - SQL Server

OPCIÓN 1: 

select  t4.name as [schema_name]
   ,       t3.name as table_name
   ,       t2.name as index_name
   ,  t1.object_id
   ,  t1.index_id
   ,  t1.partition_number
   ,  t1.index_type_desc
   ,  t1.avg_fragmentation_in_percent
   ,  t1.avg_fragment_size_in_pages
   ,  t1.page_count
   from sys.dm_db_index_physical_stats(db_id(),NULL,NULL,NULL,'LIMITED' ) t1
   inner join sys.objects t3 on (t1.object_id = t3.object_id)
   inner join sys.schemas t4 on (t3.schema_id = t4.schema_id)
   inner join sys.indexes t2 on (t1.object_id = t2.object_id and  t1.index_id = t2.index_id )
   where index_type_desc <> 'HEAP'
   and avg_fragmentation_in_percent >30
   order by t4.name,t3.name,t2.name,partition_number



OPCIÓN 2: 


SELECT dbschemas.[name] as 'Schema',
       dbtables.[name] as 'Table',
       dbindexes.[name] as 'Index',
       indexstats.avg_fragmentation_in_percent,
       indexstats.page_count
FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL, NULL) AS indexstats
INNER JOIN sys.tables dbtables on dbtables.[object_id] = indexstats.[object_id]
INNER JOIN sys.schemas dbschemas on dbtables.[schema_id] = dbschemas.[schema_id]
INNER JOIN sys.indexes AS dbindexes ON dbindexes.[object_id] = indexstats.[object_id]
AND indexstats.index_id = dbindexes.index_id
WHERE indexstats.database_id = DB_ID()
AND indexstats.avg_fragmentation_in_percent >30
ORDER BY indexstats.avg_fragmentation_in_percent desc



Nota:    Sustituir el avg_fragmentation_in_percent por el valor que queramos buscar.