需要弄清楚FileTable在空間中使用了多少

Question

我需要弄清MS Sql Server FileTable上已經插入了多少個文件以及它們的平均大小。

FileTable已經相當大，它的容量大約27GB的數據。

這是我使用的SQL，但它非常慢。它已經運行了一個多小時，但它還沒有完成。有什麼方法可以加快查詢速度嗎？

SELECT round(datalength([file_stream])/1048576.0, 2) As FileSizeMB, COUNT(*) 
FROM [dbo].[Document] WITH(NOLOCK) 
GROUP BY round(datalength([file_stream])/1048576.0, 2) 
ORDER BY round(datalength([file_stream])/1048576.0, 2) 

Answer 1

不知道這是否會工作，我沒有FileTable的實施，但這將得到表的大小。

SELECT 
s.Name AS SchemaName, 
     t.NAME AS TableName, 
     p.rows AS RowCounts, 
     SUM(a.total_pages) * 8 AS TotalSpaceKB, 
     (SUM(a.total_pages) * 8)/1024.0 AS TotalSpaceMB, 
     ((SUM(a.total_pages) * 8)/1024.0)/1024.0 AS TotalSpaceGB, 
     SUM(a.used_pages) * 8 AS UsedSpaceKB, 
     (SUM(a.used_pages) * 8)/1024.0 AS UsedSpaceMB, 
     ((SUM(a.used_pages) * 8)/1024.0) /1024.0 AS UsedSpaceGB, 
     (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB, 
     ((SUM(a.total_pages) - SUM(a.used_pages)) * 8)/1024.0 AS UnusedSpaceMB, 
     (((SUM(a.total_pages) - SUM(a.used_pages)) * 8)/1024.0)/1024.0 AS UnusedSpaceGB, 
     GROUPING(t.Name) 
FROM sys.tables t 
     INNER JOIN sys.schemas s ON s.schema_id = t.schema_id 
     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 
WHERE t.NAME NOT LIKE 'dt%' 
     AND t.is_ms_shipped = 0 
     AND i.OBJECT_ID > 255 
GROUP BY s.Name, 
     t.Name, 
     p.Rows 
     WITH ROLLUP 
     ORDER BY s.Name, 
     t.Name