Question

I like using the SQL Management Studio report ‘Disk Usage by Top Tables’ to see what’s taking up space in my databases. What equivalent query can I use in SQL Azure to see

• number of rows per table
• disk usage per table (preferably breaking out data and index)

In SQL Profiler I can see that the Disk Usage by Top Tables report normally runs this:

begin try 

    SELECT TOP 1000
        (row_number() over(order by (a1.reserved + ISNULL(a4.reserved,0)) desc))%2 as l1,
        a3.name AS [schemaname],
        a2.name AS [tablename],
        a1.rows as row_count,
        (a1.reserved + ISNULL(a4.reserved,0))* 8 AS reserved,
        a1.data * 8 AS data,
        (CASE WHEN (a1.used + ISNULL(a4.used,0)) > a1.data THEN (a1.used + ISNULL(a4.used,0)) - a1.data ELSE 0 END) * 8 AS index_size,
        (CASE WHEN (a1.reserved + ISNULL(a4.reserved,0)) > a1.used THEN (a1.reserved + ISNULL(a4.reserved,0)) - a1.used ELSE 0 END) * 8 AS unused

    FROM    (   SELECT
                ps.object_id,
                SUM ( CASE WHEN (ps.index_id < 2) THEN row_count    ELSE 0 END ) AS [rows],
                SUM (ps.reserved_page_count) AS reserved,
                SUM (CASE   WHEN (ps.index_id < 2) THEN (ps.in_row_data_page_count + ps.lob_used_page_count + ps.row_overflow_used_page_count)
                            ELSE (ps.lob_used_page_count + ps.row_overflow_used_page_count) END
                    ) AS data,
                SUM (ps.used_page_count) AS used
                FROM sys.dm_db_partition_stats ps
                GROUP BY ps.object_id
            ) AS a1

    LEFT OUTER JOIN (   SELECT
                        it.parent_id,
                        SUM(ps.reserved_page_count) AS reserved,
                        SUM(ps.used_page_count) AS used
                        FROM sys.dm_db_partition_stats ps
                        INNER JOIN sys.internal_tables it ON (it.object_id = ps.object_id)
                        WHERE it.internal_type IN (202,204)
                        GROUP BY it.parent_id
                    ) AS a4 ON (a4.parent_id = a1.object_id)

    INNER JOIN sys.all_objects a2  ON ( a1.object_id = a2.object_id )

    INNER JOIN sys.schemas a3 ON (a2.schema_id = a3.schema_id)

    WHERE a2.type <> N'S' and a2.type <> N'IT'

end try
begin catch
    select
    -100 as l1
    ,   1 as schemaname
    ,       ERROR_NUMBER() as tablename
    ,       ERROR_SEVERITY() as row_count
    ,       ERROR_STATE() as reserved
    ,       ERROR_MESSAGE() as data
    ,       1 as index_size
    ,       1 as unused
end catch

but that fails when running against SQL Azure with message

Msg 208, Level 16, State 1, Line 4
Invalid object name 'sys.internal_tables'.

Answer 1

try querying sys.dm_db_partition_stats

e.g.,

— Calculates the size of individual database objects.

SELECT sys.objects.name, SUM(reserved_page_count) * 8.0 / 1024 as Size
FROM sys.dm_db_partition_stats, sys.objects 
WHERE sys.dm_db_partition_stats.object_id = sys.objects.object_id 
GROUP BY sys.objects.name
ORDER BY Size DESC;
GO