--============================================================================
--查看数据库文件大小
SELECT
DB_NAME(F.database_id) AS DBName,
F.name AS LogicName,
F.size*8/1024 AS SizeMB
FROM sys.master_files F
INNER JOIN sys.databases D
ON D.database_id=F.database_id
INNER JOIN sys.database_mirroring dm
on D.database_id=dm.database_id
AND (dm.mirroring_guid IS NULL OR dm.mirroring_role=1)
WHERE F.database_id>4
ORDER BY SizeMB DESC
--============================================================================

--============================================================================
--查看当前实例下各数据库数据文件中可收缩情况
--UnusedExtents 标示可以被shrink的分区数DROP TABLE #T
GO
DROP TABLE #T1
GO
CREATE  TABLE #T
(DatabaseID INT,FileID INT,FileGroup INT,TotalExtents INT,UsedExtents INT,LogicName NVARCHAR(200),FilePath NVARCHAR(500)
)CREATE  TABLE #T1
(FileID INT,FileGroup INT,TotalExtents INT,UsedExtents INT,LogicName NVARCHAR(200),FilePath NVARCHAR(500)
)EXEC sp_MSforeachdb N'
USE [?]
DELETE FROM  #T1
INSERT INTO  #T1(FileID,FileGroup,TotalExtents,UsedExtents,LogicName,FilePath)
EXEC(''DBCC SHOWFILESTATS'')INSERT INTO  #T(DatabaseID,FileID,FileGroup,TotalExtents,UsedExtents,LogicName,FilePath)
SELECT DB_ID(),FileID,FileGroup,TotalExtents,UsedExtents,LogicName,FilePath FROM #T1
'SELECT DB_NAME(T.DatabaseID) AS DatabaseName,
(T.TotalExtents-T.UsedExtents) AS UnusedExtents,
* FROM #T AS T
ORDER BY UnusedExtents DESC
--============================================================================