SQL Azure表大小

Question

在mssql2005中，当我想以MB为单位获取表的大小时，我使用EXEC sp_spaceused'table'。

有没有办法在SQL Azure中使用某些查询或API来获取特定表所使用的空间？

Answer 1

来自Ryan Dunn http://dunnry.com/blog/CalculatingTheSizeOfYourSQLAzureDatabase.aspx

select    
      sum(reserved_page_count) * 8.0 / 1024 [SizeInMB]
from    
      sys.dm_db_partition_stats

GO

select    
      sys.objects.name, sum(reserved_page_count) * 8.0 / 1024 [SizeInMB]
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 sum(reserved_page_count) DESC

第一个将以MB为单位给出数据库的大小，第二个将以相同的方式为您提供数据库的大小，但是对于数据库中按大到小排序的每个对象，将其分解出来。

Answer 2

这是一个查询，它将按表格为您提供总行数，行数和每行字节数：

select 
    o.name, 
    max(s.row_count) AS 'Rows',
    sum(s.reserved_page_count) * 8.0 / (1024 * 1024) as 'GB',
    (8 * 1024 * sum(s.reserved_page_count)) / (max(s.row_count)) as 'Bytes/Row'
from sys.dm_db_partition_stats s, sys.objects o
where o.object_id = s.object_id
group by o.name
having max(s.row_count) > 0
order by GB desc

这是一个与上面相同的查询，但按索引分解：

select  
    o.Name,
    i.Name,
    max(s.row_count) AS 'Rows',
    sum(s.reserved_page_count) * 8.0 / (1024 * 1024) as 'GB',
    (8 * 1024* sum(s.reserved_page_count)) / max(s.row_count) as 'Bytes/Row'
from 
    sys.dm_db_partition_stats s, 
    sys.indexes i, 
    sys.objects o
where 
    s.object_id = i.object_id
    and s.index_id = i.index_id
    and s.index_id >0
    and i.object_id = o.object_id
group by i.Name, o.Name
having SUM(s.row_count) > 0
order by GB desc

Answer 3

通过这种方式，您可以获得更大的优势：

 SELECT  sys.objects.name,
            SUM(row_count) AS 'Row Count',
            SUM(reserved_page_count) * 8.0 / 1024 AS 'Table Size (MB)'
    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 [Table Size (MB)] DESC

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