How can you tell what Tables are taking up the most space in a SQL Server 2005 Database?

Question

How can you tell what Tables are taking up the most space in a SQL Server 2005 Database?

I am sure there is some System Stored Procedure that shows this information.<

Answer 1

Thanks to @marc_s for the answer. I needed to know data vs index space so I went ahead and expanded on the query to include that.

SELECT TableName
    , SUM(DataRowCounts) AS DataRowCounts
    , SUM(DataTotalSpaceGB) AS DataTotalSpaceGB
    , SUM(DataSpaceUsedGB) AS DataSpaceUsedGB
    , SUM(DataUnusedSpaceGB) AS DataUnusedSpaceGB
    , SUM(IndexRowCounts) AS IndexRowCounts
    , SUM(IndexTotalSpaceGB) AS IndexTotalSpaceGB
    , SUM(IndexSpaceUsedGB) AS IndexSpaceUsedGB
    , SUM(IndexUnusedSpaceGB) AS IndexUnusedSpaceGB
    , SUM(DataTotalSpaceGB) + SUM(IndexTotalSpaceGB) AS TotalSpaceGB
FROM
(
SELECT t.NAME AS TableName
    , i.type_desc AS IndexType
    , CASE WHEN i.type_desc IN ('CLUSTERED', 'CLUSTERED COLUMNSTORE', 'HEAP') THEN CAST(ROUND(((SUM(a.total_pages) * 8) / 1024.00), 2)/1000 AS NUMERIC(36, 2)) ELSE 0 END AS DataTotalSpaceGB
    , CASE WHEN i.type_desc IN ('CLUSTERED', 'CLUSTERED COLUMNSTORE', 'HEAP') THEN CAST(ROUND(((SUM(a.used_pages) * 8) / 1024.00), 2)/1000 AS NUMERIC(36, 2))  ELSE 0 END AS DataSpaceUsedGB    
    , CASE WHEN i.type_desc IN ('CLUSTERED', 'CLUSTERED COLUMNSTORE', 'HEAP') THEN CAST(ROUND(((SUM(a.total_pages) - SUM(a.used_pages)) * 8) / 1024.00, 2)/1000 AS NUMERIC(36, 2)) ELSE 0 END AS DataUnusedSpaceGB
    , CASE WHEN i.type_desc IN ('CLUSTERED', 'CLUSTERED COLUMNSTORE', 'HEAP') THEN SUM(p.Rows) ELSE 0 END AS DataRowCounts
    , CASE WHEN i.type_desc = 'NONCLUSTERED' THEN CAST(ROUND(((SUM(a.total_pages) * 8) / 1024.00), 2)/1000 AS NUMERIC(36, 2)) ELSE 0 END AS IndexTotalSpaceGB
    , CASE WHEN i.type_desc = 'NONCLUSTERED' THEN CAST(ROUND(((SUM(a.used_pages) * 8) / 1024.00), 2)/1000 AS NUMERIC(36, 2))  ELSE 0 END AS IndexSpaceUsedGB    
    , CASE WHEN i.type_desc = 'NONCLUSTERED' THEN CAST(ROUND(((SUM(a.total_pages) - SUM(a.used_pages)) * 8) / 1024.00, 2)/1000 AS NUMERIC(36, 2)) ELSE 0 END AS IndexUnusedSpaceGB  
    , CASE WHEN i.type_desc = 'NONCLUSTERED' THEN SUM(p.Rows) ELSE 0 END AS IndexRowCounts
FROM sys.tables t
INNER JOIN sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN sys.allocation_units a ON p.partition_id = a.container_id
LEFT JOIN sys.schemas s ON t.schema_id = s.schema_id
WHERE t.NAME NOT LIKE 'dt%'
    AND t.is_ms_shipped = 0
    AND i.OBJECT_ID > 255
    AND s.Name = 'dbo' --update this filter
    AND t.Name = 'MyTable'
GROUP BY t.Name
    , i.type_desc
) x
GROUP BY TableName
ORDER BY TotalSpaceGB DESC