1. 檢視資料檔案佔用（許可權要求較大）

DBCC showfilestats

dbcc sqlperf(logspace) 

SELECT a.name [檔名稱]
	,cast(a.[size]*1.0/128 as decimal(12,1)) AS [檔案設定大小(MB)]
	,CAST( fileproperty(s.name,'SpaceUsed')/(8*16.0) AS DECIMAL(12,1)) AS [檔案所佔空間(MB)]
	,CAST( (fileproperty(s.name,'SpaceUsed')/(8*16.0))/(s.size/(8*16.0))*100.0  AS DECIMAL(12,1)) AS [所佔空間率%]
	,CASE WHEN A.growth =0 THEN '檔案大小固定，不會增長' ELSE '檔案將自動增長' end [增長模式]
	,CASE WHEN A.growth > 0 AND is_percent_growth = 0 THEN '增量為固定大小'
		WHEN A.growth > 0 AND is_percent_growth = 1 THEN '增量將用整數百分比表示'
		ELSE '檔案大小固定，不會增長' END AS [增量模式]
	,CASE WHEN A.growth > 0 AND is_percent_growth = 0 THEN cast(cast(a.growth*1.0/128as decimal(12,0)) AS VARCHAR)+'MB'
		WHEN A.growth > 0 AND is_percent_growth = 1 THEN cast(cast(a.growth AS decimal(12,0)) AS VARCHAR)+'%'
		ELSE '檔案大小固定，不會增長' end AS [增長值(%或MB)]
	,a.physical_name AS [檔案所在目錄]
	,a.type_desc AS [檔案型別]
FROM sys.database_files  a
INNER JOIN sys.sysfiles AS s ON a.[file_id]=s.fileid
LEFT JOIN sys.dm_db_file_space_usage b ON a.[file_id]=b.[file_id]
ORDER BY a.[type]