FILEPROPERTY (Transact-SQL)
Returns the specified file name property value when a file name in the current database and a property name are specified. Returns NULL for files that are not in the current database.
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Transact-SQL Syntax Conventions
Składnia
FILEPROPERTY ( file_name , property )
Arguments
file_name
Is an expression that contains the name of the file associated with the current database for which to return property information. file_name is nchar(128).property
Is an expression that contains the name of the file property to return. property is varchar(128), and can be one of the following values.Value
Description
Value returned
IsReadOnly
Filegroup is read-only.
1 = True
0 = False
NULL = Input is not valid.
IsPrimaryFile
File is the primary file.
1 = True
0 = False
NULL = Input is not valid.
IsLogFile
File is a log file.
1 = True
0 = False
NULL = Input is not valid.
SpaceUsed
Amount of space that is used by the specified file.
Number of pages allocated in the file
Return Types
int
Uwagi
file_name corresponds to the name column in the sys.master_files or sys.database_files catalog view.
Examples
The following example returns the setting for the IsPrimaryFile property for the AdventureWorks_Data file name in the AdventureWorks database.
USE AdventureWorks2012;
GO
SELECT FILEPROPERTY('AdventureWorks2012_Data', 'IsPrimaryFile')AS [Primary File];
GO
Here is the result set.
Primary File
-------------
1
(1 row(s) affected)
Zobacz także
Odwołanie
FILEGROUPPROPERTY (Transact-SQL)
Metadata Functions (Transact-SQL)