KW的資訊小站

SELECT 
   t.NAME AS TableName,
   s.Name AS SchemaName,
   p.rows AS RowCounts,
   SUM(a.total_pages) * 8 /1024 AS TotalSpaceMB, 
   SUM(a.used_pages) * 8 /1024 AS UsedSpaceMB, 
   (SUM(a.total_pages) - SUM(a.used_pages)) * 8 /1024 AS UnusedSpaceMB,
CASE WHEN p.rows >0 THEN p.rows/(SUM(a.total_pages) * 8) ELSE 0 END AS Row_SpaceUse
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 OUTER 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 
GROUP BY 
   t.Name, s.Name, p.Rows
ORDER BY 
   UsedSpaceMB DESC  -- 以大小逆向排序 (大的在前)