Query to look at filegroups by table

SELECT OBJECT_SCHEMA_NAME(t.object_id) AS schema_name

,t.name AS table_name

,i.index_id

,i.name AS index_name

,ds.name AS filegroup_name

,p.rows

FROM sys.tables t

INNER JOIN sys.indexes i ON t.object_id=i.object_id

INNER JOIN sys.filegroups ds ON i.data_space_id=ds.data_space_id

INNER JOIN sys.partitions p ON i.object_id=p.object_id AND i.index_id=p.index_id

ORDER BY t.name, i.index_id