TSQL Index fragmentation query returning confusing data

Question

I have a very simple, standard query to show me the fragmentation of indexes within a database, as follows:

SELECT  DB_NAME(DB_ID()) AS DatabaseName,
    OBJECT_NAME(ddips.[object_id]) AS TableName,
    ind.[name] AS IndexName,
    ddips.index_type_desc AS IndexType,
    ddips.avg_fragmentation_in_percent AS FragmentationPercentage,
    ddips.fragment_count AS FragmentCount,
    ddips.avg_fragment_size_in_pages AS AvgFragmentSizeInPages,
    ddips.page_count AS [PageCount]
FROM    sys.dm_db_index_physical_stats (DB_ID(), null, null, null, null) AS ddips
    INNER JOIN sys.indexes ind on ind.[object_id] = ddips.[object_id]
ORDER BY ddips.avg_fragmentation_in_percent DESC

When I run it, however, I see the exact same data - same tablename, indexname, and indextype - returned multiple times with varying percentages of fragmentation. An example is below:

I don't understand these results. When I open the table in SSMS, open the index, and go to the Fragmentation page, it's telling me that the lowest number, 1.71%, is the fragmentation. Where are all of these other fragmentation numbers coming from? Can anyone help explain these results? Many thanks.

Answer 1

You are doing on the join on object_id in the two views, and that is not a unique value. Multiple occurences of a value for object_id means multiple row joins. You need to include index_id to the join condition. EDIT: Yeh, what Martin Smith said!