sys.dm_db_index_physical_stats (
{ database_id | NULL | 0 | DEFAULT }
, { object_id | NULL | 0 | DEFAULT }
, { index_id | NULL | 0 | -1 | DEFAULT }
, { partition_number | NULL | 0 | DEFAULT }
, { mode | NULL | DEFAULT }
)
Sample :
SELECT * FROM sys.dm_db_index_physical_stats
(DB_ID(N'DBName'), OBJECT_ID(N'IX_NonClustered '), NULL, NULL , 'DETAILED');